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Insulated spiral ducts

Insulated spiral duct made of galvanised sheet steel and non-combustible mineral wool

Double-walled insulated spiral ducting provides effective protection against condensation.
Condensation is the main cause of moisture damage in buildings and occurs wherever warm air meets cold surfaces. This can happen, for example, with a fresh air supply in winter or exhaust air from a heat exchanger. 

Possible applications:

Outdoor and exhaust air duct

To avoid condensate on the outside of the ductwork, the duct must be jacketed with insulation. An insulation thickness of approx. 15 mm may be sufficient here.

Supply and extract air ducting through cold rooms

Here, the ducts must be protected against heat loss and it must be prevented that condensate forms on the inside of the extract air duct. The insulation thickness depends on the ambient temperature. If it is exposed to outdoor temperatures (e.g. an uninsulated attic), an insulation thickness of 50 mm should be chosen. In unheated rooms (e.g. an unheated cellar) an insulation thickness of 25 mm can be used.


As a special design, we can also offer you aluminium or stainless steel


Insulated spiral duct
Insulated spiral duct
Inner diameter | insulation thickness [mm]: 150 | 25

Insulated spiral duct made of galvanised sheet steelDouble-walled, insulated spiral ducting provides effective protection against condensation.Designed in accordance with DIN EN 12237 and DIN EN 1506Condensation is the main cause of moisture damage in buildings and occurs wherever warm air meets cold surfaces. This can be the case, for example, with a fresh air supply in winter or exhaust air from a heat exchanger. Material: galvanised sheet steelLength: 1 metreInsulation thicknesses: 15 mm| 25 mm | 50 mmMake: Intelmann Possible applications:Outdoor and exhaust air ductTo prevent condensation on the outside of the pipework, the duct must be encased in insulation. An insulation thickness of approx. 15 mm may be sufficient here.Supply and return air ducting through cold roomsHere, the ducts must be protected against heat loss and condensation must be prevented from forming on the inside of the exhaust air duct. The insulation thickness depends on the ambient temperature. If the temperature is outside ( uninsulated attic), an insulation thickness of 50 mm should be selected. In unheated rooms ( unheated cellar), the insulation thickness of 25 mm can be used.

Variants from €24.57
Regular price: €50.04
Insulated nipple (pipe connector)
Insulated nipple (pipe connector)
Inner diameter | insulation thickness [mm]: 150 | 15

Insulated nipple for spiral ducts made of galvanised sheet steelDouble-walled, insulated spiral ducting provides effective protection against condensation.Designed in accordance with DIN EN 12237 and DIN EN 1506 Condensation is the main cause of moisture damage in buildings and occurs wherever warm air meets cold surfaces. This can be the case, for example, with a fresh air supply in winter or exhaust air from a heat exchanger. Material: galvanised sheet steelInsulation thickness: 15 mmMake: Intelmann Possible applications:Outside and exhaust air ductTo prevent condensation on the outside of the pipework, the duct must be encased in insulation. An insulation thickness of approx. 15 mm may be sufficient here.Supply and return air ducting through cold roomsHere, the ducts must be protected against heat loss and condensation must be prevented from forming on the inside of the exhaust air duct. The insulation thickness depends on the ambient temperature. If the temperature is outside ( uninsulated loft), an insulation thickness of 50 mm should be selected. In unheated rooms ( unheated cellar), the insulation thickness of 25 mm can be used.

Variants from €9.87
Regular price: €13.44
Insulated spiral-seam bend 30° - 90°
Insulated spiral-seam bend 30° - 90°
Degree [°]: 90 degrees Inner diameter | insulation thickness [mm]: 250 | 15

Insulated spiral duct made of galvanised sheet steelDouble-walled, insulated spiral duct effectively protects against condensation. Condensation is the main cause of moisture damage in buildings and occurs wherever warm air meets cold surfaces. This can be the case, for example, with a fresh air supply in winter or exhaust air from a heat exchanger. Material: galvanised sheet steelInsulation thickness: 15 mm Possible applications:Outside and exhaust air ductTo prevent condensation on the outside of the pipework, the duct must be encased in insulation. An insulation thickness of approx. 15 mm may be sufficient here.Supply and return air ducting through cold roomsHere, the ducts must be protected against heat loss and condensation must be prevented from forming on the inside of the exhaust air duct. The insulation thickness depends on the ambient temperature. If the temperature is outside ( uninsulated loft), an insulation thickness of 50 mm should be selected. In unheated rooms ( unheated cellar), the insulation thickness of 25 mm can be used.

Variants from €21.45
Regular price: €121.61
Insulated sleeve (moulded part connector)
Insulated sleeve (moulded part connector)
Inner diameter | insulation thickness [mm]: 224 | 50

Insulated sleeve for spiral ducts made of galvanised sheet steelDouble-walled, insulated spiral ducting provides effective protection against condensation.Design in accordance with DIN EN 12237 and DIN EN 1506Condensation is the main cause of moisture damage in buildings and occurs wherever warm air meets cold surfaces. This can be the case, for example, with a fresh air supply in winter or exhaust air from a heat exchanger.Material: galvanised sheet steelInsulation thickness: 15 mmMake: Intelmann Possible applications:Outside and exhaust air ductTo prevent condensation on the outside of the pipework, the duct must be encased in insulation. An insulation thickness of approx. 15 mm may be sufficient here.Supply and return air ducting through cold roomsHere, the ducts must be protected against heat loss and condensation must be prevented from forming on the inside of the exhaust air duct. The insulation thickness depends on the ambient temperature. If the temperature is outside ( uninsulated loft), an insulation thickness of 50 mm should be selected. In unheated rooms ( unheated cellar), the insulation thickness of 25 mm can be used.

Variants from €6.35
Regular price: €27.44
Insulated shut-off damper with motorised bracket
Insulated shut-off damper with motorised bracket
Inner diameter | insulation thickness [mm]: 100 | 25

Insulated spiral duct shut-off damper made of galvanised sheet steelDouble-walled, insulated spiral duct provides effective protection against condensation.Designed in accordance with DIN EN 12237 and DIN EN 1506Condensation is the main cause of moisture damage in buildings and occurs wherever warm air meets cold surfaces. This can be the case, for example, with a fresh air supply in winter or exhaust air from a heat exchanger.Material: galvanised sheet steelInsulation thickness: 15 mmMake: Intelmann Possible applications:Outside and exhaust air ductTo prevent condensation on the outside of the pipework, the duct must be encased in insulation. An insulation thickness of approx. 15 mm may be sufficient here.Supply and return air ducting through cold roomsHere, the ducts must be protected against heat loss and condensation must be prevented from forming on the inside of the exhaust air duct. The insulation thickness depends on the ambient temperature. If the temperature is outside ( uninsulated attic), an insulation thickness of 50 mm should be selected. In unheated rooms ( unheated cellar), the insulation thickness of 25 mm can be used.

Variants from €45.29
Regular price: €58.43
Insulated reducer socket - nipple
Insulated reducer socket - nipple
Inner diameter | insulation thickness [mm]: 125 | 15 to inside diameter [mm]: 100

Insulated spiral duct reducer made of galvanised sheet steel.Moulded part on pipe reductionDouble-walled, insulated spiral ducting provides effective protection against condensation. Condensation is the main cause of moisture damage in buildings and occurs wherever warm air meets cold surfaces. This can be the case, for example, with a fresh air supply in winter or exhaust air from a heat exchanger. Material: galvanised sheet steelInsulation thickness: 15 mm Possible applications:Outside and exhaust air ductTo prevent condensation on the outside of the pipework, the duct must be encased in insulation. An insulation thickness of approx. 15 mm may be sufficient here.Supply and return air ducting through cold roomsHere, the ducts must be protected against heat loss and condensation must be prevented from forming on the inside of the exhaust air duct. The insulation thickness depends on the ambient temperature. If the temperature is outside ( uninsulated attic), an insulation thickness of 50 mm should be selected. In unheated rooms ( unheated cellar), the insulation thickness of 25 mm can be used.

Regular price: €19.89
Insulated T-piece
Insulated T-piece
Inner diameter | insulation thickness [mm]: 200 | 50 to inside diameter [mm]: 200

Insulated spiral duct T-piece made of galvanised sheet steelDouble-walled, insulated spiral ducting provides effective protection against condensation. Condensation is the main cause of moisture damage in buildings and occurs wherever warm air meets cold surfaces. This can be the case, for example, with a fresh air supply in winter or exhaust air from a heat exchanger. Material: galvanised sheet steelInsulation thickness: 15 mm Possible applications:Outside and exhaust air ductTo prevent condensation on the outside of the pipework, the duct must be encased in insulation. An insulation thickness of approx. 15 mm may be sufficient here.Supply and return air ducting through cold roomsHere, the ducts must be protected against heat loss and condensation must be prevented from forming on the inside of the exhaust air duct. The insulation thickness depends on the ambient temperature. If the temperature is outside ( uninsulated loft), an insulation thickness of 50 mm should be selected. In unheated rooms ( unheated cellar), the insulation thickness of 25 mm can be used.

Variants from €39.48
Regular price: €136.47
Insulated reducer nipple - nipple
Insulated reducer nipple - nipple
Inner diameter | insulation thickness [mm]: 280 | 15 to inside diameter [mm]: 200

Insulated spiral duct reducer made of galvanised sheet steel.Pipe on pipe reducerDouble-walled, insulated spiral ducting provides effective protection against condensation. Condensation is the main cause of moisture damage in buildings and occurs wherever warm air meets cold surfaces. This can be the case, for example, with a fresh air supply in winter or exhaust air from a heat exchanger. Material: galvanised sheet steelInsulation thickness: 15 mm Possible applications:Outside and exhaust air ductTo prevent condensation on the outside of the pipework, the duct must be encased in insulation. An insulation thickness of approx. 15 mm may be sufficient here.Supply and return air ducting through cold roomsHere, the ducts must be protected against heat loss and condensation must be prevented from forming on the inside of the exhaust air duct. The insulation thickness depends on the ambient temperature. If the temperature is outside ( uninsulated attic), an insulation thickness of 50 mm should be selected. In unheated rooms ( unheated cellar), the insulation thickness of 25 mm can be used.

Variants from €22.38
Regular price: €97.60
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