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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...


£8.28 (Excluding VAT at 20%)




Quantity:



People who bought this item also bought:
1. 90° Bends (Ref: B90)
2. Split Ring Supports (Ref: SPR)
3. Spiral Tube - 3m Lengths (Ref: SR)
100 dia In Duct Non-return Damper with Seals
125 dia In Duct Non-return Damper with Seals
DAOSL-IN-125

Data sheet...



£8.28 (Excluding VAT at 20%)




Quantity:


125 dia In Duct Non-return Damper with Seals
150 dia In Duct Non-return Damper with Seals
DAOSL-IN-150

Data sheet...


£8.32 (Excluding VAT at 20%)




Quantity:



People who bought this item also bought:
1. PVC Cloth Duct Tape (Ref: DT)
2. Adhesive Gasket Tape (Ref: GSKT)
3. Self-Tapping Screws (Ref: STS)
150 dia In Duct Non-return Damper with Seals
160 dia In Duct Non-return Damper with Seals
DAOSL-IN-160

Data sheet...


£9.04 (Excluding VAT at 20%)




Quantity:



People who bought this item also bought:
1. 90° Bends (Ref: B90)
2. Split Ring Supports (Ref: SPR)
3. Spiral Tube - 3m Lengths (Ref: SR)
160 dia In Duct Non-return Damper with Seals
200 dia In Duct Non-return Damper with Seals
DAOSL-IN-200

Data sheet...


£11.40 (Excluding VAT at 20%)




Quantity:



People who bought this item also bought:
1. 400mm Diameter Booted T (Ref: TB400)
200 dia In Duct Non-return Damper with Seals
250 dia In Duct Non-return Damper with Seals
DAOSL-IN-250

Data sheet...


£17.51 (Excluding VAT at 20%)




Quantity:



People who bought this item also bought:
1. M10 Back Plate Threaded Rod Hanger (Ref: BPH-10)
2. 250mm Dia Inline Duct Fan (Ref: DV250)
3. 250 dia Small Format Circular Diffuser - White (Ref: NCD250)
250 dia In Duct Non-return Damper with Seals
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