About this product

Perfectly suited for ducting your Bathroom or Kitchen extractor fan, Hydroponics, In-Line Extract Fans, or Cooker Hood, Prevent cold air from entering your home through the dryer vent with our inline dryer vent draft blocker

Comes with balanced damper fully assembled, stops unpleasant odours, noises, or draughts flowing back through your duct

This backdraught shutter can be used as a part of a long duct run for a variety of purposes including whole house ventilation, passive stack vent, air conditioning, positive pressure, Tumble Dryer Venting, HVAC, and Heat Recovery Systems

White Plastic Extractor Fan Backdraught Shutter - Male Spigot

Compatible with 4" Inch diameter ducts or vents. Easy to!

Duct draft stopper prevent cold air or wind from entering the ventilation pipe. In this case, the flap is installed in such a way that the flap leaves only open into the outgoing air direction. This means that no cold air / wind or smell can penetrate the ventilation pipe from the outside.

The backflow Preventer valve is installed by pushing it into the ventilation pipe as far as it will go. The position of the spring should be horizontal when the flap is installed horizontally so that it can be opened and closed optimally. This also applies to the vertical installation.