Please be advised that we have returned from Xmas break to find our CNC manufacturing equipment has developed a fault. Products held in stock aren't affected but there will undoubtedly be a delay on parts made to order. We apologise for any inconvenience caused. We hope and expect to have the issue resolved within 48 hours.


Please note we are currently unable to dispatch to Northern Ireland due to high carriage costs.Please note that we no longer accept Paypal payments.

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. Aluminium Foil Duct Tape (Ref: AFT)
2. 150 dia In Duct Non-return Damper with Seals (Ref: DAOSL-IN-150)
3. PVC Cloth Duct Tape (Ref: DT)
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. Short 90° Bends (Ref: BSK)
2. 125mm Male Couplers with Seals (Ref: NPL125)
3. 150mm Diameter Reducer (Ref: RC150)
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. 150mm Male Couplers with Seals (Ref: NPL150)
2. 150mm Semi-rigid Flexible Ducting (Ref: PAK150)
3. REB3 Electronic Speed Controller (Ref: REB-3)
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:


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. 250 dia 90° Segmented Bends with Seals (Ref: BSL90-250)
2. 250 dia Circular Louvre in Silver with Insect Mesh (Ref: DSAV250C)
3. 250 dia Jet Cowl (Ref: HAN250)
250 dia In Duct Non-return Damper with Seals
Your Basket

Items:
Total:

View BasketCheckout
Best Sellers

100 dia 90° Pressed Bends with Seals

100 dia 90° Pressed Bends with Seals

£6.62

600mm 30x30 Cantilever Support

600mm 30x30 Cantilever Support

£17.75

PU S1 Clear Extraction Hose 10m Length

PU S1 Clear Extraction Hose 10m Length

M8 Back Plate Threaded Rod Hanger

M8 Back Plate Threaded Rod Hanger

£0.92

100mm dia Chrome Exhaust Valve

100mm dia Chrome Exhaust Valve

£8.21