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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. 160 dia In Duct Non-return Damper with Seals (Ref: DAOSL-IN-160)
2. Hose Clips (Ref: HC)
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. 125 dia 45° Pressed Bends with Seals (Ref: BPL45-125)
2. 4 Choice Assortment (Ref: BUD4)
3. Split Ring Supports (Ref: SPR)
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. Suspension Rings with EPDM Rubber (Ref: RSUR)
2. Spiral Tube Duct 1.5m Lengths (Ref: SRH)
3. 150mm Diameter Booted T (Ref: TB150)
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. 100 dia In Duct Non-return Damper with Seals (Ref: DAOSL-IN-100)
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. Rectangular Duct Straight 300x100mm (Ref: RDS300-100)
2. Square to Round 300mm Width 100mm Depth (Ref: SQRD300-100)
3. 200mm Semi-rigid Flexible Ducting (Ref: PAK200)
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° Bird Beak - Vertical Ducts (Ref: BSAV250)
2. Tecseal 100FR 380cc Cartridge (Ref: 100FR380)
3. Spiral Tube - 3m Lengths (Ref: SR)
250 dia In Duct Non-return Damper with Seals

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