Please note we are currently unable to dispatch to Northern Ireland.

Please note that grilles and louvres made to order have a current lead time of 10-12 working days. We have been informed by the manufacturer that this is due to a material shortage. We apologise for the inconvenience this may cause.

Non-return (backdraft) Dampers

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



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.

100 dia Non-return (Backdraft) Damper
BDS-100




3.45 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. Foil Plain Flexible Ducting (Ref: AF)
2. Aluminium Foil Duct Tape (Ref: AFT)
3. 90° Bends (Ref: B90)
100 dia Non-return (Backdraft) Damper

125 dia Non-return (Backdraft) Damper
BDS-125




4.11 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. 90° Bends (Ref: B90)
2. 100 dia Non-return (Backdraft) Damper (Ref: BDS-100)
3. M8 Back Plate Threaded Rod Hanger (Ref: BPH-8)
125 dia Non-return (Backdraft) Damper

150 dia Non-return (Backdraft) Damper
BDS-150




4.32 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. Foil Plain Flexible Ducting (Ref: AF)
2. 90° Bends (Ref: B90)
3. Flanged Spigots (Ref: IL)
150 dia Non-return (Backdraft) Damper

160 dia Non-return (Backdraft) Damper
BDS-160




5.04 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. 45° Bends (Ref: B45)
2. Damper Units - Balancing (Ref: DS)
3. Suspension Rings with EPDM Rubber (Ref: RSUR)
160 dia Non-return (Backdraft) Damper

200 dia Non-return (Backdraft) Damper
BDS-200




5.67 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. Foil Plain Flexible Ducting (Ref: AF)
2. PVC Cloth Duct Tape (Ref: DT)
3. 200mm Mixed Flow Inline Duct Fan (Ref: DV-PP-200-910)
200 dia Non-return (Backdraft) Damper

250 dia Non-return (Backdraft) Damper
BDS-250




9.75 (Excluding VAT at 20%)





Quantity:


250 dia Non-return (Backdraft) Damper

315 dia Non-return (Backdraft) Damper
BDS-315




14.56 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. Foil Plain Flexible Ducting (Ref: AF)
2. Air Exhaust Valves (Ref: BKU)
3. 315mm Dia Inline Duct Fan (Ref: DV315)
315 dia Non-return (Backdraft) Damper

355 dia Non-return (Backdraft) Damper
BDS-355




19.74 (Excluding VAT at 20%)





Quantity:


355 dia Non-return (Backdraft) Damper

400 dia Non-return (Backdraft) Damper
BDS-400




26.32 (Excluding VAT at 20%)





Quantity:


400 dia Non-return (Backdraft) Damper

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