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3'' 4'' Backdraft Damper Duct Draft Stopper Draft Blocker, One Way Airflow Ducting Insert for Ducting in PVC or Flexible Hose, Bathrooms Fans and Shutter Fan Vent
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*Price and Stocks may change without prior notice
*Packaging of actual item may differ from photo shown
- Electrical items MAY be 110 volts.
- 7 Day Return Policy
- All products are genuine and original
- Cash On Delivery/Cash Upon Pickup Available
3'' 4'' Backdraft Damper Duct Draft Stopper Draft Features
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Pipe backdraft damper, butterfly valve. Especially suitable for inserting into exhaust hose or pvc. Perfect for use in bathrooms, garages, air conditioners, fans, extractor hoods, ventilation systems.
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The flap valve opens and closes automatically, allowing only one-directional airflow, preventing cold air from entering. The inner rubber seal is used for better tightness and for noise reduction.
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The backdraft damper is installed by pushing it into the vent pipe as far as it will go. If the backdraft damper is installed horizontally, the spring position should be horizontal for optimum opening and closing. This also applies if installed vertical.
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The backdraft damper is made of pvc. The valve blades are made of pvc. The shaft and spring are made of PVC.Flame retardant material can resist high temperature exceeding 150 ℃.
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This backdraft damper is a universal style, You can connect it with any aluminum foil and other flexible pipes of these 4 sizes at will. After purchasing the product, you will get a 5-year warranty and lifelong after-sales service.
