Please note that grilles and louvres made to order are currently experiencing delays to the manufacturer's heavy workload. We have been advised that lead times are in the region of 15-20 working days.


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.

Non-return (backdraft) Dampers with Seals

Ventilation Ducting  | Dampers & Access Doors | Non-return Dampers |  Non-return (backdraft) Dampers with Seals



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 Non-return Damper with Seals
DAOSL-100




£8.04 (Excluding VAT at 20%)




Quantity:



People who bought this item also bought:
1. Air Exhaust Valves (Ref: BKU)
2. 100 dia In Duct Non-return Damper with Seals (Ref: DAOSL-IN-100)
3. 100mm Dia Inline Duct Fan (Ref: DV100)
100 dia Non-return Damper with Seals
125 dia Non-return Damper with Seals
DAOSL-125




£8.04 (Excluding VAT at 20%)




Quantity:


125 dia Non-return Damper with Seals
150 dia Non-return Damper with Seals
DAOSL-150




£8.08 (Excluding VAT at 20%)




Quantity:



People who bought this item also bought:
1. 90° Bends (Ref: B90)
2. Spiral Tube - 3m Lengths (Ref: SR)
3. 150mm Diameter T Piece (Ref: TCP150)
150 dia Non-return Damper with Seals
160 dia Non-return Damper with Seals
DAOSL-160




£8.78 (Excluding VAT at 20%)




Quantity:



People who bought this item also bought:
1. 250 dia 45° T Piece with Seals - 160mm Branch (Ref: TSVL250-160)
160 dia Non-return Damper with Seals
200 dia Non-return Damper with Seals
DAOSL-200




£11.07 (Excluding VAT at 20%)




Quantity:



People who bought this item also bought:
1. 180mm x 80mm Curved Access Doors to Suit 100mm/125mm dia Duct (Ref: ACC180-80-100/125)
2. 250mm x 150mm Curved Access Doors to Suit 150mm/160mm dia Duct (Ref: ACC250-150-150-160)
3. 250mm x 150mm Curved Access Doors to Suit 200mm dia Duct (Ref: ACC250-150-200)
200 dia Non-return Damper with Seals
250 dia Non-return Damper with Seals
DAOSL-250




£17.00 (Excluding VAT at 20%)




Quantity:



People who bought this item also bought:
1. PU S1 Clear Extraction Hose 10m Length (Ref: PUS1-10)
2. 100 dia Stainless Steel Outlets with Gravity Flaps (Ref: USMS100)
3. Y Pieces (Ref: Y45)
250 dia Non-return Damper with Seals
315 dia Non-return Damper with Seals
DAOSL-315




£28.90 (Excluding VAT at 20%)




Quantity:


315 dia Non-return Damper with Seals
355 dia Non-return Damper with Seals
DAOSL-355




£29.39 (Excluding VAT at 20%)




Quantity:


355 dia Non-return Damper with Seals
400 dia Non-return Damper with Seals
DAOSL-400




£45.85 (Excluding VAT at 20%)




Quantity:



People who bought this item also bought:
1. Female Couplers (Ref: MF)
2. Multileaf Volume Control Damper 800mm Width (Ref: MVCD800)
3. Male Couplers (Ref: NP)
400 dia Non-return Damper with Seals
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