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In Duct Non-return (backdraft) Dampers

Ventilation Ducting  | Dampers & Access Doors | Non-return Dampers |  In Duct Non-return (backdraft) Dampers



In Duct Non return dampers with seals


Non-return dampers have traditionally been installed between two lengths of duct, rather like a coupler: new in duct dampers can be inserted directly, simplifying installation.

Lightweight aluminium blades on a light steel spring maintain the damper in the closed position when no air is flowing, preventing wind/drafts from flowing back through the duct. These dampers feature seals and rolled edges.

100 dia In Duct Non-return Damper with Seals
DAOSL-IN-100

Data sheet...


£8.03 (Excluding VAT at 20%)




Quantity:



People who bought this item also bought:
1. Hose Clips (Ref: HC)
2. Female Couplers (Ref: MF)
3. 100mm Reducer (Ref: RC100)
100 dia In Duct Non-return Damper with Seals
125 dia In Duct Non-return Damper with Seals
DAOSL-IN-125

Data sheet...



£8.03 (Excluding VAT at 20%)




Quantity:



People who bought this item also bought:
1. 125mm Diameter Round Duct (Ref: RND125)
2. Wall Plates (Ref: WPT)
3. 90° Flanged Bends (Ref: BFLN90)
125 dia In Duct Non-return Damper with Seals
150 dia In Duct Non-return Damper with Seals
DAOSL-IN-150

Data sheet...


£8.07 (Excluding VAT at 20%)




Quantity:



People who bought this item also bought:
1. Spiral Tube - 3m Lengths (Ref: SR)
2. Female Couplers (Ref: MF)
3. 150 dia 45° Pressed Bends with Seals (Ref: BPL45-150)
150 dia In Duct Non-return Damper with Seals
160 dia In Duct Non-return Damper with Seals
DAOSL-IN-160

Data sheet...


£8.77 (Excluding VAT at 20%)




Quantity:


160 dia In Duct Non-return Damper with Seals
200 dia In Duct Non-return Damper with Seals
DAOSL-IN-200

Data sheet...


£11.06 (Excluding VAT at 20%)




Quantity:



People who bought this item also bought:
1. Duct Flanges - Fabricated (Ref: CDF)
2. Hose Clips (Ref: HC)
3. 200mm Semi-rigid Flexible Ducting (Ref: PAK200)
200 dia In Duct Non-return Damper with Seals
250 dia In Duct Non-return Damper with Seals
DAOSL-IN-250

Data sheet...


£16.98 (Excluding VAT at 20%)




Quantity:



People who bought this item also bought:
1. Short 90° Bends (Ref: BSK)
2. 150 dia In Duct Non-return Damper with Seals (Ref: DAOSL-IN-150)
3. Cap Ends (Ref: EF)
250 dia In Duct Non-return Damper with Seals
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