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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. 100 dia 90° Pressed Bends with Seals (Ref: BPL90-100)
2. 150 dia In Duct Non-return Damper with Seals (Ref: DAOSL-IN-150)
3. 100mm Male Couplers with Seals (Ref: NPL100)
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. 100 dia In Duct Non-return Damper with Seals (Ref: DAOSL-IN-100)
2. 125 dia Actuator Controlled Diverter T Piece (Ref: DATVTML125)
3. PVC Cloth Duct Tape (Ref: DT)
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 Duct 1.5m Lengths (Ref: SRH)
2. 100 dia In Duct Non-return Damper with Seals (Ref: DAOSL-IN-100)
3. Fast Clamps (Ref: FC)
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:



People who bought this item also bought:
1. 200 dia In Duct Non-return Damper with Seals (Ref: DAOSL-IN-200)
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. 200 dia Bird Beak (Ref: ASV200)
2. 15° Bends (Ref: B15)
3. 160 dia In Duct Non-return Damper with Seals (Ref: DAOSL-IN-160)
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:


250 dia In Duct Non-return Damper with Seals
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