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Air duct construction, fittings & industrial engineering

Coolenvi™ supplies precision-manufactured air duct components, fittings and special construction solutions for modern ventilation and ducting systems. The range includes standardised and custom solutions for building services, industrial applications, process air systems, data centres, clean rooms and energy-efficient HVAC systems. In addition, components for industrial applications, containment trays for media and groundwater protection, and metal construction solutions ensure safe, airtight and standards-compliant media handling.

Comparison of Airtightness Classes for Air Duct Systems

DIN EN 16798-3 DIN EN 13779 Leakage Formula
(l/s·m²)
Example
+500 Pa
Example
−500 Pa
Example
+1,000 Pa
Example
−1,000 Pa
ATC 5A
(Standard)
0.027 × p0.651.531.532.412.41
ATC 4B
(Recommended)
0.009 × p0.650.510.510.800.80
ATC 3C
(Special applications)
0.003 × p0.650.170.170.270.27
ATC 2D
(Grease-tight, watertight)
0.001 × p0.650.060.060.090.09
ATC 10.00033 × p0.650.020.020.030.03

Note: Leakage rates apply equally to positive and negative pressure testing. The absolute value of test pressure p [Pa] is decisive. Actual test pressures are project-specific. Prices are only valid for orders placed as an XML file.

Now select the right category for your Air Duct System

HVAC installation solutions

Straight Air Ducts for your Systems

Here you find straight air ducts as the base for efficient air distribution systems. Fittings such as bends and transitions are shown in the next section.

HVAC installation solutions
Spiral Seam Duct L=3M DN560
Spiral Seam Duct L=3M DN560
Item - Ductype: Straight Air Ducting - round
Billing is carried out as a form component based on a standard length of 3000 mm with a minimum billing area of this length m. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

Content: 3 lm (€102.00* / 1 lm)

€306.00*
Straight Air Ducting - rectangular stainless steel 1.4301
Straight Air Ducting - rectangular stainless steel 1.4301
Item - Ductype: Straight Air Ducting - rectangular
Stainless steel 1.4301 air duct section with edge dimensions from 300 to 2000 mm. Both cross-sections are equipped as standard with SBM flange frames for connection to common duct systems. Billing is carried out as a form component based on a standard length of 900 mm with a minimum billing area of 1 m². For standard lengths from 900 mm, billing is made in full m² units to account for sheet metal waste and manufacturing effort. Air ducts and fittings are made of galvanised steel sheet (e.g. according to EN 1505/1507). Components are typically produced with folded seams, while fittings use Pittsburgh or snap-lock seams. SBM flange connections are sealed as standard with sealing compound. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

€123.36*
Spiral Seam Duct L=3M DN1000
Spiral Seam Duct L=3M DN1000
Item - Ductype: Straight Air Ducting - round
Billing is carried out as a form component based on a standard length of 3000 mm with a minimum billing area of this length m. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

Content: 3 lm (€280.67* / 1 lm)

€842.00*
Sheet metal cut without bending - in galvanised duct steel up to 0.88 mm
Sheet metal cut without bending - in galvanised duct steel up to 0.88 mm
Item - Ductype: Customising
Galvanised air ducts or fittings occasionally require sheet metal cut-outs for repairs, cladding or modifications. Billing is based on the fitting price with a minimum charge of 1 m². For cut-outs above 1 m², billing is done in full square metre units to account for material waste and manufacturing effort. Custom-made products are excluded from return and withdrawal rights. Paid recycling return is available.

€37.92*
Duct Volume Damper - Manual Version with Lever
Duct Volume Damper - Manual Version with Lever
Item - Quantity: 1 Pc
For manual or basic air volume control, a professionally manufactured damper blade with external operating lever is installed into air ducts or smooth pipes, such as spiral wound ducting. Damper blades must be ordered as separate components, as this service covers workshop labour only. Billing is based on a unit price as workshop work. For dimensions exceeding 1 m², the order quantity must be considered accordingly. Custom-made products are excluded from return and withdrawal rights. Paid recycling return is available.

€65.50*

Fittings for Air Duct Systems

Here you find essential fittings such as bends, tees, reducers and transitions for complete air duct installations. These components ensure flexible routing and efficient airflow distribution.

HVAC duct fittings
Form Air Duct Fitting - rectangular stainless steel 1.4301
Form Air Duct Fitting - rectangular stainless steel 1.4301
Item - Ductype: Form Air Duct Fitting - rectangular
Stainless steel ventilation duct fitting with edge dimensions from 300 to 2000 mm. Both cross-sections are equipped as standard with SBM flange frames for connection to common duct systems. Billing is based on a duct fitting with a minimum billing area of 1 m² if the sheet metal requirement for smaller components falls below this value. For fittings larger than 1 m², billing is carried out in full m² units to account for sheet metal waste and manufacturing effort. Duct fittings are manufactured from galvanised steel sheet (e.g. according to EN 1505/1507). Components are typically produced with Pittsburgh or snap-lock seams. SBM flange connections are sealed as standard with sealing compound. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

€145.92*
Form Air Duct Fitting - rectangular galvanized
Form Air Duct Fitting - rectangular galvanized
Item - Ductype: Form Air Duct Fitting - rectangular
Galvanised ventilation duct fitting with edge dimensions from 300 to 2000 mm. Both cross-sections are equipped as standard with SBM flange frames for connection to common duct systems. Billing is based on a duct fitting with a minimum billing area of 1 m² if the sheet metal requirement for smaller components falls below this value. For fittings larger than 1 m², billing is carried out in full m² units to account for sheet metal waste and manufacturing effort. Duct fittings are manufactured from galvanised steel sheet (e.g. according to EN 1505/1507). Components are typically produced with Pittsburgh or snap-lock seams. SBM flange connections are sealed as standard with sealing compound. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

€37.92*
Sheet metal cut without bending - in galvanised duct steel up to 0.88 mm
Sheet metal cut without bending - in galvanised duct steel up to 0.88 mm
Item - Ductype: Customising
Galvanised air ducts or fittings occasionally require sheet metal cut-outs for repairs, cladding or modifications. Billing is based on the fitting price with a minimum charge of 1 m². For cut-outs above 1 m², billing is done in full square metre units to account for material waste and manufacturing effort. Custom-made products are excluded from return and withdrawal rights. Paid recycling return is available.

€37.92*
Flexible Air Duct Connector with SBM Flange - Basic Price
Flexible Air Duct Connector with SBM Flange - Basic Price
Item - Quantity: 1 Pc
Galvanised air duct fitting as a flexible fabric connector with edge dimensions from 300 to 2000 mm. Both cross-sections are equipped as standard with SBM flange frames for connection to common duct systems, air handling units, fire dampers or acoustic/vibration decoupling. Billing for this fitting is based on a base price regardless of size. Taking material waste and manufacturing effort into account, billing is carried out in full linear metres as a separate item. The duct fitting is manufactured from galvanised steel sheet (e.g. according to EN 1505/1507). Components are typically spot-welded. SBM flange connections are sealed as standard with sealing compound. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Optional equipotential bonding cables are available. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from return rights. Paid recycling return is available.

€37.98*
Flexible Air Duct Connector Glasfiber/PU 45/60/45 - Price Running Meter
Flexible Air Duct Connector Glasfiber/PU 45/60/45 - Price Running Meter
Item - Ductype: Form Air Duct Fitting - rectangular
For each galvanised air duct fitting as a flexible fabric connector, this PVC material with galvanised sheet edges provides optimal compatibility for standard SBM flange frames for connection to common duct components. Billing for this fitting is carried out exclusively in full linear metres as an additional item to the base price of the fabric connector. If this item is ordered without the base fabric connector product, only the ordered linear metres are supplied without frame components, etc. Suitable for ventilation systems transporting non-aggressive air. Optional equipotential bonding cables are available. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa L=150mm Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from return rights. Paid recycling return is available.

€44.08*
Duct Volume Damper - Manual Version with Lever
Duct Volume Damper - Manual Version with Lever
Item - Quantity: 1 Pc
For manual or basic air volume control, a professionally manufactured damper blade with external operating lever is installed into air ducts or smooth pipes, such as spiral wound ducting. Damper blades must be ordered as separate components, as this service covers workshop labour only. Billing is based on a unit price as workshop work. For dimensions exceeding 1 m², the order quantity must be considered accordingly. Custom-made products are excluded from return and withdrawal rights. Paid recycling return is available.

€65.50*
Form Air Duct Fitting - transition round/rectangular EL300 mm SYM galvanized
Form Air Duct Fitting - transition round/rectangular EL300 mm SYM galvanized
Item - Quantity: 1 Pc
Galvanized ventilation transition piece from round to rectangular in symmetrical design with an edge length of 300 mm. The rectangular side is equipped with a standard SBM flange frame for connection to common duct systems. Billing is based on a minimum area of 1 m² per form piece, regardless of the actual component size. Suitable for HVAC and ducting applications, especially for transitions between round pipe and rectangular duct systems in galvanized execution. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations from the standard design such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-manufactured products are excluded from withdrawal and return rights. Paid return for recycling is available.

€74.56*
Form Air Duct Fitting - transition round/rectangular EL300 mm ASYM galvanized
Form Air Duct Fitting - transition round/rectangular EL300 mm ASYM galvanized
Item - Ductype: Reducer - rectangular/round
Galvanized ventilation transition piece from round to rectangular in asymmetrical design with an edge length of 300 mm. The rectangular side is equipped with a standard SBM flange frame for connection to common duct systems. Billing is based on a minimum area of 1 m² per form piece, regardless of the actual component size. Suitable for HVAC and ducting applications, especially for transitions between round pipe and rectangular duct systems in galvanized execution. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations from the standard design such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-manufactured products are excluded from withdrawal and return rights. Paid return for recycling is available.

€124.32*
Form Air Duct Fitting - transition round/rectangular EL500 mm SYM galvanized
Form Air Duct Fitting - transition round/rectangular EL500 mm SYM galvanized
Item - Ductype: Reducer - rectangular/round
Galvanized round-to-square ventilation transition piece in a symmetrical design with an edge length of 301-500 mm. The square end is equipped with an SBM flange frame as standard and is designed for connection to common duct systems. Billing is based on a minimum area of 1 m² per fitting, regardless of the actual component size. Suitable for ventilation and ducting applications, especially for transitions between round and rectangular duct systems in a galvanized finish. Standard version: ATC 5 according to DIN EN 16798 (Tightness class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations from the standard version, such as other tightness classes, pressure classes, or special options, are subject to additional charges and must be ordered separately. Custom-made products are excluded from the right of withdrawal and return. Return for recycling is possible for a fee.

€125.40*
Form Air Duct Fitting - transition round/rectangular EL1000 mm SYM galvanized
Form Air Duct Fitting - transition round/rectangular EL1000 mm SYM galvanized
Item - Ductype: Reducer - rectangular/round
Galvanized ventilation transition piece from round to rectangular in symmetrical design with a edge length of 501-1000 mm. The rectangular side is equipped with a standard SBM flange frame for connection to common duct systems. Billing is based on a minimum area of 1 m² per form piece, regardless of the actual component size. Suitable for HVAC and ducting applications, especially for transitions between round pipe and rectangular duct systems in galvanized execution. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations from the standard design such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-manufactured products are excluded from withdrawal and return rights. Paid return for recycling is available.

€127.36*
Form Air Duct Fitting - transition round/rectangular EL500 mm ASYM galvanized
Form Air Duct Fitting - transition round/rectangular EL500 mm ASYM galvanized
Item - Ductype: Reducer - rectangular/round
Galvanized round-to-square ventilation transition piece in a asymmetrical design with an edge length of 301-500 mm. The square end is equipped with an SBM flange frame as standard and is designed for connection to common duct systems. Billing is based on a minimum area of 1 m² per fitting, regardless of the actual component size. Suitable for ventilation and ducting applications, especially for transitions between round and rectangular duct systems in a galvanized finish. Standard version: ATC 5 according to DIN EN 16798 (Tightness class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations from the standard version, such as other tightness classes, pressure classes, or special options, are subject to additional charges and must be ordered separately. Custom-made products are excluded from the right of withdrawal and return. Return for recycling is possible for a fee.

€127.40*
Form Air Duct Fitting - transition round/rectangular EL1000 mm ASYM galvanized
Form Air Duct Fitting - transition round/rectangular EL1000 mm ASYM galvanized
Item - Ductype: Reducer - rectangular/round
Galvanized ventilation transition piece from round to rectangular in asymmetrical design with a edge length of 501-1000 mm. The rectangular side is equipped with a standard SBM flange frame for connection to common duct systems. Billing is based on a minimum area of 1 m² per form piece, regardless of the actual component size. Suitable for HVAC and ducting applications, especially for transitions between round pipe and rectangular duct systems in galvanized execution. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations from the standard design such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-manufactured products are excluded from withdrawal and return rights. Paid return for recycling is available.

€152.11*
Form Air Duct Fitting - transition round/rectangular EL2000 mm SYM galvanized
Form Air Duct Fitting - transition round/rectangular EL2000 mm SYM galvanized
Item - Ductype: Reducer - rectangular/round
Galvanized ventilation transition piece from round to rectangular in symmetrical design with a edge length of 1001-2000 mm. The rectangular side is equipped with a standard SBM flange frame for connection to common duct systems. Billing is based on a minimum area of 1 m² per form piece, regardless of the actual component size. Suitable for HVAC and ducting applications, especially for transitions between round pipe and rectangular duct systems in galvanized execution. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations from the standard design such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-manufactured products are excluded from withdrawal and return rights. Paid return for recycling is available.

€231.55*
Form Air Duct Fitting - transition round/rectangular EL2000 mm ASYM galvanized
Form Air Duct Fitting - transition round/rectangular EL2000 mm ASYM galvanized
Item - Ductype: Reducer - rectangular/round
Galvanized ventilation transition piece from round to rectangular in asymmetrical design with a edge length of 1001-2000 mm. The rectangular side is equipped with a standard SBM flange frame for connection to common duct systems. Billing is based on a minimum area of 1 m² per form piece, regardless of the actual component size. Suitable for HVAC and ducting applications, especially for transitions between round pipe and rectangular duct systems in galvanized execution. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations from the standard design such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-manufactured products are excluded from withdrawal and return rights. Paid return for recycling is available.

€241.32*

Custom Air Duct Modifications & Special Fabrication

Here you find custom-made ductwork solutions and workshop modifications tailored to project-specific requirements. We adapt dimensions, connections and system layouts according to customer needs for optimal HVAC performance.

Custom HVAC fabrication
Tip
Surcharge – Air Duct Order as Sketch Instead of XML
Surcharge – Air Duct Order as Sketch Instead of XML
Item - Ductype: Customising
Surcharge – Air Duct Order as Sketch Instead of XML Our air duct production is optimized for standardized XML production data in accordance with the specified import format. This enables automated processing, efficient manufacturing, and reduced production times. If an order is submitted as a drawing, sketch, PDF or any format other than the required XML file, additional engineering work is required. This includes manual interpretation, data conversion, geometry verification, and preparation for production. This surcharge covers the additional technical and administrative effort required to convert non-standard order information into production-ready manufacturing data.

€1.60*
Surcharge - ATC 4 DIN EN 16798 Class B DIN EN 13779
Surcharge - ATC 4 DIN EN 16798 Class B DIN EN 13779
Item - Ductype: Customising
Surcharge for air duct systems according to ATC 4 classification, compliant with DIN EN 16798 Class B and DIN EN 13779. Applies to straight and formed air duct components used in HVAC ventilation systems for professional installation projects.

€1.60*
Tip
Surcharge – Duct Length Deviating from Standard Length ≠ 1,500 mm
Surcharge – Duct Length Deviating from Standard Length ≠ 1,500 mm
Item - Ductype: Customising
Surcharge – Duct Length Deviating from Standard Length ≠ 1,500 mm Our air duct production is standardized on a nominal length of 1,500 mm for straight duct sections, ensuring efficient manufacturing and optimized material usage. Any deviation from this standard length—whether shorter or longer—requires additional engineering and production effort, including cutting adjustments, material handling and process adaptation. This surcharge covers the additional manufacturing effort required for non-standard duct lengths outside the 1,500 mm standard production format.

€2.40*
Tip
Surcharge – Seal Ends of Air Ducts and Fittings with Protective Foil
Surcharge – Seal Ends of Air Ducts and Fittings with Protective Foil
Item - Ductype: Customising
Surcharge – Seal Ends of Air Ducts and Fittings with Protective Foil To protect against dust, moisture and contamination, the ends of air ducts and fittings can be sealed with protective foil after production. This option is commonly used in projects with increased hygiene requirements and follows established industry practice for protecting components during storage, transport and installation. In many HVAC applications this is carried out in line with the hygiene principles of VDI 6022 to help prevent contamination prior to final installation.

€2.40*
Surcharge - ATC 3 DIN EN 16798 Class C DIN EN 13779
Surcharge - ATC 3 DIN EN 16798 Class C DIN EN 13779
Item - Ductype: Customising
Surcharge for air duct systems according to ATC 3 classification, compliant with DIN EN 16798 Class C and DIN EN 13779. Applies to straight and formed air duct components used in HVAC ventilation systems for professional installation projects.

€3.20*
SBM20-Flange Loose Air Duct – Price Running Meter
SBM20-Flange Loose Air Duct – Price Running Meter
Item - Quantity: 1m
This is the mandatory running meter profile of the SBM20 duct flange frame for configuring loose frame systems and forms the technical basis for manufacturing airtight duct connections. A required component for linear meter (lm) based flange assemblies. The price refers to a meter unit per frame element and is only valid in combination with the corresponding base price for fabrication. Without this running meter profile, production processing is not technically feasible. Product Features SBM20 system standard for duct flange construction Running meter profile for flexible manufacturing Component for lm-based production workflows Custom-made products are excluded from return rights. Paid recycling return is available.

€4.40*
SBM30-Flange Loose Air Duct – Price Running Meter
SBM30-Flange Loose Air Duct – Price Running Meter
Item - Ductype: Customising
This is the mandatory running meter profile of the SBM30 duct flange frame for configuring loose frame systems and forms the technical basis for manufacturing airtight duct connections. A required component for linear meter (lm) based flange assemblies. The price refers to a meter unit per frame element and is only valid in combination with the corresponding base price for fabrication. Without this running meter profile, production processing is not technically feasible. Product Features SBM30 system standard for duct flange construction Running meter profile for flexible manufacturing Component for lm-based production workflows Custom-made products are excluded from return rights. Paid recycling return is available.

€6.08*
SBM20-Flange Loose Air Duct – Basic Price
SBM20-Flange Loose Air Duct – Basic Price
Item - Ductype: Customising
The SBM 20 duct flange frame in loose configuration forms the technical base for manufacturing airtight duct connections within customized air distribution systems. This base frame is a mandatory component for producing linear meter (lm) based duct flange assemblies. The price refers to a base unit per frame and is only valid in combination with the corresponding linear meter (lm) fabrication. Without this base frame, production processing is not technically feasible. Application Area Used in ventilation and air conditioning duct systems for commercial, industrial, and building services engineering (HVAC/TGA). Suitable for modular flange systems with high airtightness requirements. Product Features SBM 20 system standard for duct flange construction Loose frame design for flexible manufacturing integration Base component for linear meter (lm) production workflows Compatible with common duct and flange systems Required for compliant installation and sealing performance Pricing Note This item is a technical base component. Final pricing depends on linear meter (lm) fabrication, geometry, and project-specific requirements. Ordering without additional lm processing is not possible. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from return rights. Paid recycling return is available.

€11.50*
Surcharge - ATC 2 DIN EN 16798 Seam Brazing - Price Running Meter
Surcharge - ATC 2 DIN EN 16798 Seam Brazing - Price Running Meter
Item - Ductype: Customising
Brazing of flange profiles or Pittsburgh seams on air duct systems is commonly used for commercial kitchen exhaust systems and for ductwork transporting condensate or grease-laden air. It minimizes air and fluid leakage while maintaining long-term sealing performance, even during regular duct cleaning. The price is quoted per running meter and is only valid when no additional sealing systems are applied. Product Features Seam brazing per running meter Custom-made products are excluded from returns. Paid recycling return service is available.

€12.10*
SBM30-Flange Loose Air Duct – Basic Price
SBM30-Flange Loose Air Duct – Basic Price
Item - Ductype: Customising
The SBM 30 duct flange frame in loose configuration forms the technical base for manufacturing airtight duct connections within customized air distribution systems. This base frame is a mandatory component for producing linear meter (lm) based duct flange assemblies. The price refers to a base unit per frame and is only valid in combination with the corresponding linear meter (lm) fabrication. Without this base frame, production processing is not technically feasible. Application Area Used in ventilation and air conditioning duct systems for commercial, industrial, and building services engineering (HVAC/TGA). Suitable for modular flange systems with high airtightness requirements. Product Features SBM 30 system standard for duct flange construction Loose frame design for flexible manufacturing integration Base component for linear meter (lm) production workflows Compatible with common duct and flange systems Required for compliant installation and sealing performance Pricing Note This item is a technical base component. Final pricing depends on linear meter (lm) fabrication, geometry, and project-specific requirements. Ordering without additional lm processing is not possible. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from return rights. Paid recycling return is available.

€12.28*
SBM40-Flange Loose Air Duct – Price Running Meter
SBM40-Flange Loose Air Duct – Price Running Meter
Item - Ductype: Customising
This is the mandatory running meter profile of the SBM40 duct flange frame for configuring loose frame systems and forms the technical basis for manufacturing airtight duct connections. A required component for linear meter (lm) based flange assemblies. The price refers to a meter unit per frame element and is only valid in combination with the corresponding base price for fabrication. Without this running meter profile, production processing is not technically feasible. Product Features SBM40 system standard for duct flange construction Running meter profile for flexible manufacturing Component for lm-based production workflows Custom-made products are excluded from return rights. Paid recycling return is available.

€15.12*
Sheet Metal Cutout in Galvanised Steel up to 0.88 mm
Sheet Metal Cutout in Galvanised Steel up to 0.88 mm
Item - Ductype: Customising
Galvanised air ducts or fittings occasionally require sheet metal cutouts for installing air grilles, access panels, branch spigots, sensors, inspection windows or for modifications. Billing is based on a unit price as workshop work. For cutouts exceeding 1 m², the order quantity must be considered accordingly. Custom-made products are excluded from return and withdrawal rights. Paid recycling return is available.

€15.50*
Angular Cut 0–89° – Duct Workshop Fabrication – Basic Price
Angular Cut 0–89° – Duct Workshop Fabrication – Basic Price
Item - Ductype: Customising
This service covers the production of angular cuts between 0–89° for supply and exhaust air ducts in ventilation systems. It is performed as workshop fabrication and is only available in combination with ordered duct components. The service is used for precise adaptation of air ducts in HVAC systems where angled adjustment is required for proper airflow and installation integration. As this is a custom-made production item, returns and withdrawal rights are excluded.

€19.36*
SBM40-Flange Loose Air Duct – Basic Price
SBM40-Flange Loose Air Duct – Basic Price
Item - Ductype: Customising
The SBM 40 duct flange frame in loose configuration forms the technical base for manufacturing airtight duct connections within customized air distribution systems. This base frame is a mandatory component for producing linear meter (lm) based duct flange assemblies. The price refers to a base unit per frame and is only valid in combination with the corresponding linear meter (lm) fabrication. Without this base frame, production processing is not technically feasible. Application Area Used in ventilation and air conditioning duct systems for commercial, industrial, and building services engineering (HVAC/TGA). Suitable for modular flange systems with high airtightness requirements. Product Features SBM 40 system standard for duct flange construction Loose frame design for flexible manufacturing integration Base component for linear meter (lm) production workflows Compatible with common duct and flange systems Required for compliant installation and sealing performance Pricing Note This item is a technical base component. Final pricing depends on linear meter (lm) fabrication, geometry, and project-specific requirements. Ordering without additional lm processing is not possible. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from return rights. Paid recycling return is available.

€21.75*
Duct Spigot Round or Rectangular - Cutout and Installation
Duct Spigot Round or Rectangular - Cutout and Installation
Item - Quantity: 1 Pc
All air grille spigots as well as inlet and outlet spigots are professionally installed into galvanised air ducts. The corresponding fittings and duct components must be ordered separately, as this service covers workshop labour only. Billing is based on a unit price for workshop work. For cutouts exceeding 1 m², the order quantity must be taken into account accordingly. Custom-made products are excluded from return and withdrawal rights. Paid recycling return is available.

€34.00*
Tip
Surcharge – Duct Section Stainless Steel 1.4301, 0.8 mm Thickness
Surcharge – Duct Section Stainless Steel 1.4301, 0.8 mm Thickness
Item - Ductype: Customising
Surcharge – Duct Section Stainless Steel 1.4301, 0.8 mm Thickness This surcharge applies to air duct and fitting components manufactured from stainless steel 1.4301 (AISI 304) with a material thickness of 0.8 mm. Compared to standard materials, stainless steel requires adapted fabrication processes including cutting, forming and welding techniques, as well as specific surface treatment considerations. This surcharge covers the additional material handling and production effort required for stainless steel HVAC components.

€93.44*
Bird protection grid - galvanized
Bird protection grid - galvanized
Item - Quantity: 1 Pc
The galvanized bird protection grid is used to close open air duct ends and protect ventilation systems from birds, debris and foreign objects. Pricing is typically based on square meter. The grid is usually installed into a surrounding galvanized steel frame, ensuring a stable and sealed duct termination. Workshop installation is included when duct components are ordered together with the grid. Standard installation is carried out using SB flange profiles. Direct duct integration is also possible, provided that future inspection and cleaning can be performed through alternative access openings.

€183.26*

Insulation for Air Duct Construction

High-quality insulation materials are essential to prevent condensation, energy loss, and performance issues. Here you can find a selection of diffusion-proof pipe insulation and matching accessories.

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KAIFLEX Continuous Roll KK+ PL19-R S3 - 19 x 1000 x 6000 mm - 6 sqm
KAIFLEX Continuous Roll KK+ PL19-R S3 - 19 x 1000 x 6000 mm - 6 sqm
Item - Quantity: 1 Pc
Kaiflex KKplus is a highly flexible foam made from synthetic rubber, FEF (Flexible Elastomeric Foam). It reliably prevents condensation and sustainably reduces energy losses. The closed-cell structure provides permanent vapor barrier properties, effectively stopping vapor diffusion and ensuring consistent insulation performance throughout the system's lifetime. Suitable for pipes, fittings, elbows, and similar components in refrigeration, air conditioning, and process engineering systems to save energy and prevent condensation.

€95.04*
%
Aluminium Adhesive Tape for Pipe Insulation 75mm 45m Roll
Aluminium Adhesive Tape for Pipe Insulation 75mm 45m Roll
Item - Quantity: 1 Pc
Aluminium adhesive tape, specially designed for sealing joints and connections on insulated copper pipes. The standard fixing tape is easy to apply and provides long-lasting sealing and protection against moisture, dust, and corrosion. Ideal for installations in heating, air-conditioning, and refrigeration systems. Material: Aluminium Dimensions: 75 mm x 0.003 mm, 45 m per roll Weight: 0.7 kg per roll Unit: Pc. Perfect for long-lasting sealing of pipe joints and insulation

€15.12* €15.50* (2.45% saved)
K-FLEX ST -  ELASTOMER ADHESIVE TAPE B1 3 MM X 50 MM X 15 M
K-FLEX ST - ELASTOMER ADHESIVE TAPE B1 3 MM X 50 MM X 15 M
Item - Quantity: 1 Pc
Black, closed-cell elastomer adhesive tape (K-FLEX ST elastomer for cold insulation). Self-adhesive backing with a mesh structure and release liner. For seam covering/bonding in all applications with elastomer insulation materials (e.g., on pipes, ducts, containers, valves, molded parts) for energy savings and/or to prevent condensation.

€19.98*
K-FLEX FRIGO ST 13 X 28 MM ENDLESS HOSE
K-FLEX FRIGO ST 13 X 28 MM ENDLESS HOSE
Item - Quantity: 1 Pc
Kaiflex ST is a flexible, closed-cell, elastomeric insulation material that reliably prevents the formation of condensation and reduces energy losses. The closed-cell structure acts as a permanent vapor barrier, effectively stopping vapor penetration and thus ensuring reliable insulation performance throughout the system's service life. Kaiflex ST is self-extinguishing, does not conduct fire, and does not drip. Thanks to its sound-reducing properties, dust- and fiber-free structure, and antimicrobial finish, Kaiflex ST is particularly suitable for use in public, commercial, and industrial buildings. Closed-cell with vapor barrier Corrosion-resistant Excellent thermal values minimize energy losses Flexible and fiber-free (for high hygiene requirements) Antimicrobial finish

Content: 10 lm (€9.74* / 1 lm)

€97.39*
K-FLEX FRIGO ST 13 X 22 MM ENDLESS HOSE
K-FLEX FRIGO ST 13 X 22 MM ENDLESS HOSE
Item - Quantity: 1 Pc
Kaiflex ST is a flexible, closed-cell, elastomeric insulation material that reliably prevents the formation of condensation and reduces energy losses. The closed-cell structure acts as a permanent vapor barrier, effectively stopping vapor penetration and thus ensuring reliable insulation performance throughout the system's service life. Kaiflex ST is self-extinguishing, does not conduct fire, and does not drip. Thanks to its sound-reducing properties, dust- and fiber-free structure, and antimicrobial finish, Kaiflex ST is particularly suitable for use in public, commercial, and industrial buildings. Closed-cell with vapor barrier Corrosion-resistant Excellent thermal values minimize energy losses Flexible and fiber-free (for high hygiene requirements) Antimicrobial finish

Content: 14 lm (€6.96* / 1 lm)

€97.39*
K-FLEX FRIGO ST 13 X 15 MM ENDLESS HOSE
K-FLEX FRIGO ST 13 X 15 MM ENDLESS HOSE
Item - Quantity: 1 Pc
Kaiflex ST is a flexible, closed-cell, elastomeric insulation material that reliably prevents the formation of condensation and reduces energy losses. The closed-cell structure acts as a permanent vapor barrier, effectively stopping vapor penetration and thus ensuring reliable insulation performance throughout the system's service life. Kaiflex ST is self-extinguishing, does not conduct fire, and does not drip. Thanks to its sound-reducing properties, dust- and fiber-free structure, and antimicrobial finish, Kaiflex ST is particularly suitable for use in public, commercial, and industrial buildings. Closed-cell with vapor barrier Corrosion-resistant Excellent thermal values minimize energy losses Flexible and fiber-free (for high hygiene requirements) Antimicrobial finish

Content: 17 lm (€5.73* / 1 lm)

€97.39*
K-FLEX FRIGO ST 13 X 18 MM ENDLESS HOSE
K-FLEX FRIGO ST 13 X 18 MM ENDLESS HOSE
Item - Quantity: 1 Pc
Kaiflex ST is a flexible, closed-cell, elastomeric insulation material that reliably prevents the formation of condensation and reduces energy losses. The closed-cell structure acts as a permanent vapor barrier, effectively stopping vapor penetration and thus ensuring reliable insulation performance throughout the system's service life. Kaiflex ST is self-extinguishing, does not conduct fire, and does not drip. Thanks to its sound-reducing properties, dust- and fiber-free structure, and antimicrobial finish, Kaiflex ST is particularly suitable for use in public, commercial, and industrial buildings. Closed-cell with vapor barrier Corrosion-resistant Excellent thermal values minimize energy losses Flexible and fiber-free (for high hygiene requirements) Antimicrobial finish

Content: 15 lm (€6.49* / 1 lm)

€97.39*
K-FLEX FRIGO ST 13 X 10 MM ENDLESS HOSE
K-FLEX FRIGO ST 13 X 10 MM ENDLESS HOSE
Item - Quantity: 1 Pc
Kaiflex ST is a flexible, closed-cell, elastomeric insulation material that reliably prevents the formation of condensation and reduces energy losses. The closed-cell structure acts as a permanent vapor barrier, effectively stopping vapor penetration and thus ensuring reliable insulation performance throughout the system's service life. Kaiflex ST is self-extinguishing, does not conduct fire, and does not drip. Thanks to its sound-reducing properties, dust- and fiber-free structure, and antimicrobial finish, Kaiflex ST is particularly suitable for use in public, commercial, and industrial buildings. Closed-cell with vapor barrier Corrosion-resistant Excellent thermal values minimize energy losses Flexible and fiber-free (for high hygiene requirements) Antimicrobial finish

Content: 23 lm (€4.51* / 1 lm)

€103.72*
K-FLEX FRIGO ST 13 X 12 MM ENDLESS HOSE
K-FLEX FRIGO ST 13 X 12 MM ENDLESS HOSE
Item - Quantity: 1 Pc
Kaiflex ST is a flexible, closed-cell, elastomeric insulation material that reliably prevents the formation of condensation and reduces energy losses. The closed-cell structure acts as a permanent vapor barrier, effectively stopping vapor penetration and thus ensuring reliable insulation performance throughout the system's service life. Kaiflex ST is self-extinguishing, does not conduct fire, and does not drip. Thanks to its sound-reducing properties, dust- and fiber-free structure, and antimicrobial finish, Kaiflex ST is particularly suitable for use in public, commercial, and industrial buildings. Closed-cell with vapor barrier Corrosion-resistant Excellent thermal values minimize energy losses Flexible and fiber-free (for high hygiene requirements) Antimicrobial finish

Content: 18 lm (€5.76* / 1 lm)

€103.72*

Complete Air Duct System Overview

Here you find the full range of air duct components including straight ducts, fittings and custom fabrication parts. Select the right category to configure your complete HVAC system.

HVAC duct system overview
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Surcharge – Air Duct Order as Sketch Instead of XML
Surcharge – Air Duct Order as Sketch Instead of XML
Item - Ductype: Customising
Surcharge – Air Duct Order as Sketch Instead of XML Our air duct production is optimized for standardized XML production data in accordance with the specified import format. This enables automated processing, efficient manufacturing, and reduced production times. If an order is submitted as a drawing, sketch, PDF or any format other than the required XML file, additional engineering work is required. This includes manual interpretation, data conversion, geometry verification, and preparation for production. This surcharge covers the additional technical and administrative effort required to convert non-standard order information into production-ready manufacturing data.

€1.60*
Surcharge - ATC 4 DIN EN 16798 Class B DIN EN 13779
Surcharge - ATC 4 DIN EN 16798 Class B DIN EN 13779
Item - Ductype: Customising
Surcharge for air duct systems according to ATC 4 classification, compliant with DIN EN 16798 Class B and DIN EN 13779. Applies to straight and formed air duct components used in HVAC ventilation systems for professional installation projects.

€1.60*
Tip
Surcharge – Duct Length Deviating from Standard Length ≠ 1,500 mm
Surcharge – Duct Length Deviating from Standard Length ≠ 1,500 mm
Item - Ductype: Customising
Surcharge – Duct Length Deviating from Standard Length ≠ 1,500 mm Our air duct production is standardized on a nominal length of 1,500 mm for straight duct sections, ensuring efficient manufacturing and optimized material usage. Any deviation from this standard length—whether shorter or longer—requires additional engineering and production effort, including cutting adjustments, material handling and process adaptation. This surcharge covers the additional manufacturing effort required for non-standard duct lengths outside the 1,500 mm standard production format.

€2.40*
Tip
Surcharge – Seal Ends of Air Ducts and Fittings with Protective Foil
Surcharge – Seal Ends of Air Ducts and Fittings with Protective Foil
Item - Ductype: Customising
Surcharge – Seal Ends of Air Ducts and Fittings with Protective Foil To protect against dust, moisture and contamination, the ends of air ducts and fittings can be sealed with protective foil after production. This option is commonly used in projects with increased hygiene requirements and follows established industry practice for protecting components during storage, transport and installation. In many HVAC applications this is carried out in line with the hygiene principles of VDI 6022 to help prevent contamination prior to final installation.

€2.40*
Surcharge - ATC 3 DIN EN 16798 Class C DIN EN 13779
Surcharge - ATC 3 DIN EN 16798 Class C DIN EN 13779
Item - Ductype: Customising
Surcharge for air duct systems according to ATC 3 classification, compliant with DIN EN 16798 Class C and DIN EN 13779. Applies to straight and formed air duct components used in HVAC ventilation systems for professional installation projects.

€3.20*
SBM20-Flange Loose Air Duct – Price Running Meter
SBM20-Flange Loose Air Duct – Price Running Meter
Item - Quantity: 1m
This is the mandatory running meter profile of the SBM20 duct flange frame for configuring loose frame systems and forms the technical basis for manufacturing airtight duct connections. A required component for linear meter (lm) based flange assemblies. The price refers to a meter unit per frame element and is only valid in combination with the corresponding base price for fabrication. Without this running meter profile, production processing is not technically feasible. Product Features SBM20 system standard for duct flange construction Running meter profile for flexible manufacturing Component for lm-based production workflows Custom-made products are excluded from return rights. Paid recycling return is available.

€4.40*
SBM20/20-Slidingprofile Sealing Loose Air Duct – Price Running Meter
SBM20/20-Slidingprofile Sealing Loose Air Duct – Price Running Meter
The sealing strip for SBM20 and SBM30 duct flange systems provides airtight duct connections for ventilation and air conditioning systems. It is especially recommended for outdoor installations, dusty environments and duct sections exceeding 500 mm, where it minimizes air leakage and prevents dust or contaminants from entering or escaping the ductwork. The price is quoted per running meter and is only valid together with the corresponding duct flange fabrication. Without this sealing strip, compliant airtight duct joints cannot be achieved. Product Features Sealing strip for SBM20 and SBM30 flange systems Sold per running meter Improves airtightness and energy efficiency Suitable for outdoor and dusty environments For rectangular HVAC duct systems Custom-made products are excluded from returns. Paid recycling return service is available.

€4.58*
SBM30-Flange Loose Air Duct – Price Running Meter
SBM30-Flange Loose Air Duct – Price Running Meter
Item - Ductype: Customising
This is the mandatory running meter profile of the SBM30 duct flange frame for configuring loose frame systems and forms the technical basis for manufacturing airtight duct connections. A required component for linear meter (lm) based flange assemblies. The price refers to a meter unit per frame element and is only valid in combination with the corresponding base price for fabrication. Without this running meter profile, production processing is not technically feasible. Product Features SBM30 system standard for duct flange construction Running meter profile for flexible manufacturing Component for lm-based production workflows Custom-made products are excluded from return rights. Paid recycling return is available.

€6.08*
SBM20-Flange Loose Air Duct – Basic Price
SBM20-Flange Loose Air Duct – Basic Price
Item - Ductype: Customising
The SBM 20 duct flange frame in loose configuration forms the technical base for manufacturing airtight duct connections within customized air distribution systems. This base frame is a mandatory component for producing linear meter (lm) based duct flange assemblies. The price refers to a base unit per frame and is only valid in combination with the corresponding linear meter (lm) fabrication. Without this base frame, production processing is not technically feasible. Application Area Used in ventilation and air conditioning duct systems for commercial, industrial, and building services engineering (HVAC/TGA). Suitable for modular flange systems with high airtightness requirements. Product Features SBM 20 system standard for duct flange construction Loose frame design for flexible manufacturing integration Base component for linear meter (lm) production workflows Compatible with common duct and flange systems Required for compliant installation and sealing performance Pricing Note This item is a technical base component. Final pricing depends on linear meter (lm) fabrication, geometry, and project-specific requirements. Ordering without additional lm processing is not possible. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from return rights. Paid recycling return is available.

€11.50*
Surcharge - ATC 2 DIN EN 16798 Seam Brazing - Price Running Meter
Surcharge - ATC 2 DIN EN 16798 Seam Brazing - Price Running Meter
Item - Ductype: Customising
Brazing of flange profiles or Pittsburgh seams on air duct systems is commonly used for commercial kitchen exhaust systems and for ductwork transporting condensate or grease-laden air. It minimizes air and fluid leakage while maintaining long-term sealing performance, even during regular duct cleaning. The price is quoted per running meter and is only valid when no additional sealing systems are applied. Product Features Seam brazing per running meter Custom-made products are excluded from returns. Paid recycling return service is available.

€12.10*
SBM30-Flange Loose Air Duct – Basic Price
SBM30-Flange Loose Air Duct – Basic Price
Item - Ductype: Customising
The SBM 30 duct flange frame in loose configuration forms the technical base for manufacturing airtight duct connections within customized air distribution systems. This base frame is a mandatory component for producing linear meter (lm) based duct flange assemblies. The price refers to a base unit per frame and is only valid in combination with the corresponding linear meter (lm) fabrication. Without this base frame, production processing is not technically feasible. Application Area Used in ventilation and air conditioning duct systems for commercial, industrial, and building services engineering (HVAC/TGA). Suitable for modular flange systems with high airtightness requirements. Product Features SBM 30 system standard for duct flange construction Loose frame design for flexible manufacturing integration Base component for linear meter (lm) production workflows Compatible with common duct and flange systems Required for compliant installation and sealing performance Pricing Note This item is a technical base component. Final pricing depends on linear meter (lm) fabrication, geometry, and project-specific requirements. Ordering without additional lm processing is not possible. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from return rights. Paid recycling return is available.

€12.28*
SBM40-Flange Loose Air Duct – Price Running Meter
SBM40-Flange Loose Air Duct – Price Running Meter
Item - Ductype: Customising
This is the mandatory running meter profile of the SBM40 duct flange frame for configuring loose frame systems and forms the technical basis for manufacturing airtight duct connections. A required component for linear meter (lm) based flange assemblies. The price refers to a meter unit per frame element and is only valid in combination with the corresponding base price for fabrication. Without this running meter profile, production processing is not technically feasible. Product Features SBM40 system standard for duct flange construction Running meter profile for flexible manufacturing Component for lm-based production workflows Custom-made products are excluded from return rights. Paid recycling return is available.

€15.12*
Sheet Metal Cutout in Galvanised Steel up to 0.88 mm
Sheet Metal Cutout in Galvanised Steel up to 0.88 mm
Item - Ductype: Customising
Galvanised air ducts or fittings occasionally require sheet metal cutouts for installing air grilles, access panels, branch spigots, sensors, inspection windows or for modifications. Billing is based on a unit price as workshop work. For cutouts exceeding 1 m², the order quantity must be considered accordingly. Custom-made products are excluded from return and withdrawal rights. Paid recycling return is available.

€15.50*
Angular Cut 0–89° – Duct Workshop Fabrication – Basic Price
Angular Cut 0–89° – Duct Workshop Fabrication – Basic Price
Item - Ductype: Customising
This service covers the production of angular cuts between 0–89° for supply and exhaust air ducts in ventilation systems. It is performed as workshop fabrication and is only available in combination with ordered duct components. The service is used for precise adaptation of air ducts in HVAC systems where angled adjustment is required for proper airflow and installation integration. As this is a custom-made production item, returns and withdrawal rights are excluded.

€19.36*
SBM40-Flange Loose Air Duct – Basic Price
SBM40-Flange Loose Air Duct – Basic Price
Item - Ductype: Customising
The SBM 40 duct flange frame in loose configuration forms the technical base for manufacturing airtight duct connections within customized air distribution systems. This base frame is a mandatory component for producing linear meter (lm) based duct flange assemblies. The price refers to a base unit per frame and is only valid in combination with the corresponding linear meter (lm) fabrication. Without this base frame, production processing is not technically feasible. Application Area Used in ventilation and air conditioning duct systems for commercial, industrial, and building services engineering (HVAC/TGA). Suitable for modular flange systems with high airtightness requirements. Product Features SBM 40 system standard for duct flange construction Loose frame design for flexible manufacturing integration Base component for linear meter (lm) production workflows Compatible with common duct and flange systems Required for compliant installation and sealing performance Pricing Note This item is a technical base component. Final pricing depends on linear meter (lm) fabrication, geometry, and project-specific requirements. Ordering without additional lm processing is not possible. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from return rights. Paid recycling return is available.

€21.75*
Straight Air Ducting - rectangular galvanized
Straight Air Ducting - rectangular galvanized
Item - Ductype: Straight Air Ducting - rectangular
Galvanised air duct section with edge dimensions from 300 to 2000 mm. Both cross-sections are equipped as standard with SBM flange frames for connection to common duct systems. Billing is carried out as a form component based on a standard length of 900 mm with a minimum billing area of 1 m². For standard lengths from 900 mm, billing is made in full m² units to account for sheet metal waste and manufacturing effort. Air ducts and fittings are made of galvanised steel sheet (e.g. according to EN 1505/1507). Components are typically produced with folded seams, while fittings use Pittsburgh or snap-lock seams. SBM flange connections are sealed as standard with sealing compound. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

€29.17*
Duct Spigot Round or Rectangular - Cutout and Installation
Duct Spigot Round or Rectangular - Cutout and Installation
Item - Quantity: 1 Pc
All air grille spigots as well as inlet and outlet spigots are professionally installed into galvanised air ducts. The corresponding fittings and duct components must be ordered separately, as this service covers workshop labour only. Billing is based on a unit price for workshop work. For cutouts exceeding 1 m², the order quantity must be taken into account accordingly. Custom-made products are excluded from return and withdrawal rights. Paid recycling return is available.

€34.00*
Spiral Seam Duct L=3M DN080
Spiral Seam Duct L=3M DN080
Item - Ductype: Straight Air Ducting - round
Billing is carried out as a form component based on a standard length of 3000 mm with a minimum billing area of this length. m². Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

Content: 3 lm (€11.73* / 1 lm)

€35.19*
Form Air Duct Fitting - rectangular galvanized
Form Air Duct Fitting - rectangular galvanized
Item - Ductype: Form Air Duct Fitting - rectangular
Galvanised ventilation duct fitting with edge dimensions from 300 to 2000 mm. Both cross-sections are equipped as standard with SBM flange frames for connection to common duct systems. Billing is based on a duct fitting with a minimum billing area of 1 m² if the sheet metal requirement for smaller components falls below this value. For fittings larger than 1 m², billing is carried out in full m² units to account for sheet metal waste and manufacturing effort. Duct fittings are manufactured from galvanised steel sheet (e.g. according to EN 1505/1507). Components are typically produced with Pittsburgh or snap-lock seams. SBM flange connections are sealed as standard with sealing compound. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

€37.92*
Sheet metal cut without bending - in galvanised duct steel up to 0.88 mm
Sheet metal cut without bending - in galvanised duct steel up to 0.88 mm
Item - Ductype: Customising
Galvanised air ducts or fittings occasionally require sheet metal cut-outs for repairs, cladding or modifications. Billing is based on the fitting price with a minimum charge of 1 m². For cut-outs above 1 m², billing is done in full square metre units to account for material waste and manufacturing effort. Custom-made products are excluded from return and withdrawal rights. Paid recycling return is available.

€37.92*
Flexible Air Duct Connector with SBM Flange - Basic Price
Flexible Air Duct Connector with SBM Flange - Basic Price
Item - Quantity: 1 Pc
Galvanised air duct fitting as a flexible fabric connector with edge dimensions from 300 to 2000 mm. Both cross-sections are equipped as standard with SBM flange frames for connection to common duct systems, air handling units, fire dampers or acoustic/vibration decoupling. Billing for this fitting is based on a base price regardless of size. Taking material waste and manufacturing effort into account, billing is carried out in full linear metres as a separate item. The duct fitting is manufactured from galvanised steel sheet (e.g. according to EN 1505/1507). Components are typically spot-welded. SBM flange connections are sealed as standard with sealing compound. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Optional equipotential bonding cables are available. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from return rights. Paid recycling return is available.

€37.98*
Spiral Seam Duct L=3M DN100
Spiral Seam Duct L=3M DN100
Item - Ductype: Straight Air Ducting - round
Billing is carried out as a form component based on a standard length of 3000 mm with a minimum billing area of this length m. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

Content: 3 lm (€13.85* / 1 lm)

€41.54*
Flexible Air Duct Connector Glasfiber/PU 45/60/45 - Price Running Meter
Flexible Air Duct Connector Glasfiber/PU 45/60/45 - Price Running Meter
Item - Ductype: Form Air Duct Fitting - rectangular
For each galvanised air duct fitting as a flexible fabric connector, this PVC material with galvanised sheet edges provides optimal compatibility for standard SBM flange frames for connection to common duct components. Billing for this fitting is carried out exclusively in full linear metres as an additional item to the base price of the fabric connector. If this item is ordered without the base fabric connector product, only the ordered linear metres are supplied without frame components, etc. Suitable for ventilation systems transporting non-aggressive air. Optional equipotential bonding cables are available. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa L=150mm Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from return rights. Paid recycling return is available.

€44.08*
Spiral Seam Duct L=3M DN125
Spiral Seam Duct L=3M DN125
Item - Ductype: Straight Air Ducting - round
Billing is carried out as a form component based on a standard length of 3000 mm with a minimum billing area of this length m. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

Content: 3 lm (€17.11* / 1 lm)

€51.32*
Duct Volume Damper - Manual Version with Lever
Duct Volume Damper - Manual Version with Lever
Item - Quantity: 1 Pc
For manual or basic air volume control, a professionally manufactured damper blade with external operating lever is installed into air ducts or smooth pipes, such as spiral wound ducting. Damper blades must be ordered as separate components, as this service covers workshop labour only. Billing is based on a unit price as workshop work. For dimensions exceeding 1 m², the order quantity must be considered accordingly. Custom-made products are excluded from return and withdrawal rights. Paid recycling return is available.

€65.50*
Spiral Seam Duct L=3M DN150
Spiral Seam Duct L=3M DN150
Item - Ductype: Straight Air Ducting - round
Billing is carried out as a form component based on a standard length of 3000 mm with a minimum billing area of this length m. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

Content: 3 lm (€22.97* / 1 lm)

€68.91*
Spiral Seam Duct L=3M DN160
Spiral Seam Duct L=3M DN160
Item - Ductype: Straight Air Ducting - round
Billing is carried out as a form component based on a standard length of 3000 mm with a minimum billing area of this length m. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

Content: 3 lm (€22.97* / 1 lm)

€68.91*
Form Air Duct Fitting - transition round/rectangular EL300 mm SYM galvanized
Form Air Duct Fitting - transition round/rectangular EL300 mm SYM galvanized
Item - Quantity: 1 Pc
Galvanized ventilation transition piece from round to rectangular in symmetrical design with an edge length of 300 mm. The rectangular side is equipped with a standard SBM flange frame for connection to common duct systems. Billing is based on a minimum area of 1 m² per form piece, regardless of the actual component size. Suitable for HVAC and ducting applications, especially for transitions between round pipe and rectangular duct systems in galvanized execution. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations from the standard design such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-manufactured products are excluded from withdrawal and return rights. Paid return for recycling is available.

€74.56*
Spiral Seam Duct L=3M DN180
Spiral Seam Duct L=3M DN180
Item - Ductype: Straight Air Ducting - round
Billing is carried out as a form component based on a standard length of 3000 mm with a minimum billing area of this length m. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

Content: 3 lm (€28.83* / 1 lm)

€86.50*
Spiral Seam Duct L=3M DN200
Spiral Seam Duct L=3M DN200
Item - Ductype: Straight Air Ducting - round
Billing is carried out as a form component based on a standard length of 3000 mm with a minimum billing area of this length m. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

Content: 3 lm (€28.83* / 1 lm)

€86.50*
Tip
Surcharge – Duct Section Stainless Steel 1.4301, 0.8 mm Thickness
Surcharge – Duct Section Stainless Steel 1.4301, 0.8 mm Thickness
Item - Ductype: Customising
Surcharge – Duct Section Stainless Steel 1.4301, 0.8 mm Thickness This surcharge applies to air duct and fitting components manufactured from stainless steel 1.4301 (AISI 304) with a material thickness of 0.8 mm. Compared to standard materials, stainless steel requires adapted fabrication processes including cutting, forming and welding techniques, as well as specific surface treatment considerations. This surcharge covers the additional material handling and production effort required for stainless steel HVAC components.

€93.44*
Spiral Seam Duct L=3M DN224
Spiral Seam Duct L=3M DN224
Item - Ductype: Straight Air Ducting - round
Billing is carried out as a form component based on a standard length of 3000 mm with a minimum billing area of this length m. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

Content: 3 lm (€36.16* / 1 lm)

€108.49*
Spiral Seam Duct L=3M DN250
Spiral Seam Duct L=3M DN250
Item - Ductype: Straight Air Ducting - round
Billing is carried out as a form component based on a standard length of 3000 mm with a minimum billing area of this length m. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

Content: 3 lm (€37.00* / 1 lm)

€111.00*
Straight Air Ducting - rectangular stainless steel 1.4301
Straight Air Ducting - rectangular stainless steel 1.4301
Item - Ductype: Straight Air Ducting - rectangular
Stainless steel 1.4301 air duct section with edge dimensions from 300 to 2000 mm. Both cross-sections are equipped as standard with SBM flange frames for connection to common duct systems. Billing is carried out as a form component based on a standard length of 900 mm with a minimum billing area of 1 m². For standard lengths from 900 mm, billing is made in full m² units to account for sheet metal waste and manufacturing effort. Air ducts and fittings are made of galvanised steel sheet (e.g. according to EN 1505/1507). Components are typically produced with folded seams, while fittings use Pittsburgh or snap-lock seams. SBM flange connections are sealed as standard with sealing compound. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

€123.36*
Form Air Duct Fitting - transition round/rectangular EL300 mm ASYM galvanized
Form Air Duct Fitting - transition round/rectangular EL300 mm ASYM galvanized
Item - Ductype: Reducer - rectangular/round
Galvanized ventilation transition piece from round to rectangular in asymmetrical design with an edge length of 300 mm. The rectangular side is equipped with a standard SBM flange frame for connection to common duct systems. Billing is based on a minimum area of 1 m² per form piece, regardless of the actual component size. Suitable for HVAC and ducting applications, especially for transitions between round pipe and rectangular duct systems in galvanized execution. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations from the standard design such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-manufactured products are excluded from withdrawal and return rights. Paid return for recycling is available.

€124.32*
Form Air Duct Fitting - transition round/rectangular EL500 mm SYM galvanized
Form Air Duct Fitting - transition round/rectangular EL500 mm SYM galvanized
Item - Ductype: Reducer - rectangular/round
Galvanized round-to-square ventilation transition piece in a symmetrical design with an edge length of 301-500 mm. The square end is equipped with an SBM flange frame as standard and is designed for connection to common duct systems. Billing is based on a minimum area of 1 m² per fitting, regardless of the actual component size. Suitable for ventilation and ducting applications, especially for transitions between round and rectangular duct systems in a galvanized finish. Standard version: ATC 5 according to DIN EN 16798 (Tightness class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations from the standard version, such as other tightness classes, pressure classes, or special options, are subject to additional charges and must be ordered separately. Custom-made products are excluded from the right of withdrawal and return. Return for recycling is possible for a fee.

€125.40*
Form Air Duct Fitting - transition round/rectangular EL1000 mm SYM galvanized
Form Air Duct Fitting - transition round/rectangular EL1000 mm SYM galvanized
Item - Ductype: Reducer - rectangular/round
Galvanized ventilation transition piece from round to rectangular in symmetrical design with a edge length of 501-1000 mm. The rectangular side is equipped with a standard SBM flange frame for connection to common duct systems. Billing is based on a minimum area of 1 m² per form piece, regardless of the actual component size. Suitable for HVAC and ducting applications, especially for transitions between round pipe and rectangular duct systems in galvanized execution. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations from the standard design such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-manufactured products are excluded from withdrawal and return rights. Paid return for recycling is available.

€127.36*
Form Air Duct Fitting - transition round/rectangular EL500 mm ASYM galvanized
Form Air Duct Fitting - transition round/rectangular EL500 mm ASYM galvanized
Item - Ductype: Reducer - rectangular/round
Galvanized round-to-square ventilation transition piece in a asymmetrical design with an edge length of 301-500 mm. The square end is equipped with an SBM flange frame as standard and is designed for connection to common duct systems. Billing is based on a minimum area of 1 m² per fitting, regardless of the actual component size. Suitable for ventilation and ducting applications, especially for transitions between round and rectangular duct systems in a galvanized finish. Standard version: ATC 5 according to DIN EN 16798 (Tightness class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations from the standard version, such as other tightness classes, pressure classes, or special options, are subject to additional charges and must be ordered separately. Custom-made products are excluded from the right of withdrawal and return. Return for recycling is possible for a fee.

€127.40*
Spiral Seam Duct L=3M DN280
Spiral Seam Duct L=3M DN280
Item - Ductype: Straight Air Ducting - round
Billing is carried out as a form component based on a standard length of 3000 mm with a minimum billing area of this length m. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

Content: 3 lm (€44.33* / 1 lm)

€133.00*
Form Air Duct Fitting - rectangular stainless steel 1.4301
Form Air Duct Fitting - rectangular stainless steel 1.4301
Item - Ductype: Form Air Duct Fitting - rectangular
Stainless steel ventilation duct fitting with edge dimensions from 300 to 2000 mm. Both cross-sections are equipped as standard with SBM flange frames for connection to common duct systems. Billing is based on a duct fitting with a minimum billing area of 1 m² if the sheet metal requirement for smaller components falls below this value. For fittings larger than 1 m², billing is carried out in full m² units to account for sheet metal waste and manufacturing effort. Duct fittings are manufactured from galvanised steel sheet (e.g. according to EN 1505/1507). Components are typically produced with Pittsburgh or snap-lock seams. SBM flange connections are sealed as standard with sealing compound. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

€145.92*
Form Air Duct Fitting - transition round/rectangular EL1000 mm ASYM galvanized
Form Air Duct Fitting - transition round/rectangular EL1000 mm ASYM galvanized
Item - Ductype: Reducer - rectangular/round
Galvanized ventilation transition piece from round to rectangular in asymmetrical design with a edge length of 501-1000 mm. The rectangular side is equipped with a standard SBM flange frame for connection to common duct systems. Billing is based on a minimum area of 1 m² per form piece, regardless of the actual component size. Suitable for HVAC and ducting applications, especially for transitions between round pipe and rectangular duct systems in galvanized execution. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations from the standard design such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-manufactured products are excluded from withdrawal and return rights. Paid return for recycling is available.

€152.11*
Spiral Seam Duct L=3M DN315
Spiral Seam Duct L=3M DN315
Item - Ductype: Straight Air Ducting - round
Billing is carried out as a form component based on a standard length of 3000 mm with a minimum billing area of this length m. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

Content: 3 lm (€53.76* / 1 lm)

€161.28*
Spiral Seam Duct L=3M DN355
Spiral Seam Duct L=3M DN355
Item - Ductype: Straight Air Ducting - round
Billing is carried out as a form component based on a standard length of 3000 mm with a minimum billing area of this length m. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

Content: 3 lm (€61.00* / 1 lm)

€183.00*
Bird protection grid - galvanized
Bird protection grid - galvanized
Item - Quantity: 1 Pc
The galvanized bird protection grid is used to close open air duct ends and protect ventilation systems from birds, debris and foreign objects. Pricing is typically based on square meter. The grid is usually installed into a surrounding galvanized steel frame, ensuring a stable and sealed duct termination. Workshop installation is included when duct components are ordered together with the grid. Standard installation is carried out using SB flange profiles. Direct duct integration is also possible, provided that future inspection and cleaning can be performed through alternative access openings.

€183.26*
Spiral Seam Duct L=3M DN400
Spiral Seam Duct L=3M DN400
Item - Ductype: Straight Air Ducting - round
Billing is carried out as a form component based on a standard length of 3000 mm with a minimum billing area of this length m. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

Content: 3 lm (€68.50* / 1 lm)

€205.50*
Spiral Seam Duct L=3M DN450
Spiral Seam Duct L=3M DN450
Item - Ductype: Straight Air Ducting - round
Billing is carried out as a form component based on a standard length of 3000 mm with a minimum billing area of this length m. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

Content: 3 lm (€77.00* / 1 lm)

€231.00*
Form Air Duct Fitting - transition round/rectangular EL2000 mm SYM galvanized
Form Air Duct Fitting - transition round/rectangular EL2000 mm SYM galvanized
Item - Ductype: Reducer - rectangular/round
Galvanized ventilation transition piece from round to rectangular in symmetrical design with a edge length of 1001-2000 mm. The rectangular side is equipped with a standard SBM flange frame for connection to common duct systems. Billing is based on a minimum area of 1 m² per form piece, regardless of the actual component size. Suitable for HVAC and ducting applications, especially for transitions between round pipe and rectangular duct systems in galvanized execution. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations from the standard design such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-manufactured products are excluded from withdrawal and return rights. Paid return for recycling is available.

€231.55*
Form Air Duct Fitting - transition round/rectangular EL2000 mm ASYM galvanized
Form Air Duct Fitting - transition round/rectangular EL2000 mm ASYM galvanized
Item - Ductype: Reducer - rectangular/round
Galvanized ventilation transition piece from round to rectangular in asymmetrical design with a edge length of 1001-2000 mm. The rectangular side is equipped with a standard SBM flange frame for connection to common duct systems. Billing is based on a minimum area of 1 m² per form piece, regardless of the actual component size. Suitable for HVAC and ducting applications, especially for transitions between round pipe and rectangular duct systems in galvanized execution. Standard design: ATC 5 according to DIN EN 16798 (leakage class A according to DIN EN 13779)Pressure range from +1,000 Pa to -500 Pa Deviations from the standard design such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-manufactured products are excluded from withdrawal and return rights. Paid return for recycling is available.

€241.32*
Spiral Seam Duct L=3M DN500
Spiral Seam Duct L=3M DN500
Item - Ductype: Straight Air Ducting - round
Billing is carried out as a form component based on a standard length of 3000 mm with a minimum billing area of this length m. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

Content: 3 lm (€85.33* / 1 lm)

€256.00*
Spiral Seam Duct L=3M DN560
Spiral Seam Duct L=3M DN560
Item - Ductype: Straight Air Ducting - round
Billing is carried out as a form component based on a standard length of 3000 mm with a minimum billing area of this length m. Special materials or designs are charged separately based on effort. Suitable for ventilation systems transporting non-aggressive air. Deviations such as other leakage classes, pressure classes or special options are subject to additional charges and must be ordered separately. Custom-made products are excluded from withdrawal and return rights. Paid recycling return is available.

Content: 3 lm (€102.00* / 1 lm)

€306.00*