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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. 100mm Bird Beaks with Seals (Ref: ASVL100)
2. M8 Back Plate Threaded Rod Hanger (Ref: BPH-8)
3. Lindab Safe 90° Bends (Ref: BU90)
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. Spiral Tube - 3m Lengths (Ref: SR)
2. Spiral Tube Duct 1.5m Lengths (Ref: SRH)
3. 125 dia 90° T Piece with Seals - 125mm Branch (Ref: TCPL125-125)
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. Spiral Tube - 3m Lengths (Ref: SR)
2. 150 dia Stainless Steel Cowls with Mesh (Ref: USLA150)
3. 200 Self-Drilling Screws + Drill Adapter (Ref: VDK-200)
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:



People who bought this item also bought:
1. Multileaf Volume Control Dampers (Ref: MVCD)
2. Suspension Rings with EPDM Rubber (Ref: RSUR)
3. Flat Shoes (Ref: TBSF)
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. 100 dia 90° Short Pressed Bends with Seals (Ref: BPKL90-100)
2. 150 dia In Duct Non-return Damper with Seals (Ref: DAOSL-IN-150)
3. No. 7 Masterflash EPDM Flashing (Ref: MFH7)
250 dia In Duct Non-return Damper with Seals
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