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315mm dia Large Format Circular Diffuser - Silver/Grey

315mm dia Large Format Circular Diffuser - Silver/Grey

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150 dia Plastic Supply/Exhaust Valves

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Please note that linear bar grilles manufactured to order may take longer than advertised due to - what we hope is - a temporary material shortage. Lead time is currently around 2-3 weeks. We apologise for any inconvenience this may cause. All other grilles and louvres are unaffected.

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




8.03 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. 150 dia Non-return Damper with Seals (Ref: DAOSL-150)
2. Damper Units - Balancing (Ref: DS)
3. Male Couplers (Ref: NP)
100 dia Non-return Damper with Seals

125 dia Non-return Damper with Seals
DAOSL-125




8.03 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. Female Couplers (Ref: MF)
2. 125mm Male Couplers with Seals (Ref: NPL125)
3. 80mm Male Couplers with Seals (Ref: NPL80)
125 dia Non-return Damper with Seals

150 dia Non-return Damper with Seals
DAOSL-150




8.07 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. Hose clips - Bundle of 10 (Ref: HC10)
2. Female Couplers (Ref: MF)
3. Hose Clips (Ref: HC)
150 dia Non-return Damper with Seals

160 dia Non-return Damper with Seals
DAOSL-160




8.77 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. 160 dia In Duct Non-return Damper with Seals (Ref: DAOSL-IN-160)
160 dia Non-return Damper with Seals

200 dia Non-return Damper with Seals
DAOSL-200




11.06 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. DEC Sonodec Acoustic Flexible Duct 200mm dia (Ref: CLDS-200)
2. 2mm Wire Rope 150m Reel (Ref: DGWR2)
3. PVC Cloth Duct Tape (Ref: DT)
200 dia Non-return Damper with Seals

250 dia Non-return Damper with Seals
DAOSL-250




16.98 (Excluding VAT at 20%)





Quantity:


250 dia Non-return Damper with Seals

315 dia Non-return Damper with Seals
DAOSL-315




28.87 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. Circular Roof Cowls (Ref: HU)
2. Spiral Tube - 3m Lengths (Ref: SR)
3. Suspension Rings (Ref: SUR)
315 dia Non-return Damper with Seals

355 dia Non-return Damper with Seals
DAOSL-355




29.36 (Excluding VAT at 20%)





Quantity:



People who bought this item also bought:
1. Male Couplers (Ref: NP)
2. 80mm Semi-rigid Flexible Ducting (Ref: PAK80)
355 dia Non-return Damper with Seals

400 dia Non-return Damper with Seals
DAOSL-400




45.81 (Excluding VAT at 20%)





Quantity:


400 dia Non-return Damper with Seals

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