125 mm Diameter External Plastic Gravity Flaps with Spigot Intake Wall Extractor Fan Shutter Grille Damper Pressure Drop for Extractor Fan Ducting Exhaust

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Product description

  • Black Plastic Ducting Air Inlet Air Outlet with Gravity Shutters - 5 inch 125mm round male spigot on the back of the grille for indoor or outdoor use.
  • Non-return shutter flaps close automatically when not in use. Stops unpleasant odours, noises, or draughts flowing back through your duct. Gravity flap - no need for springs that could break.
  • Suitable to use in compliance with Part F Building Regulations.
  • This grille can be used as a part of a long ductwork run for a variety of purposes including whole house ventilation, passive ventilation, positive input, air conditioning, HVAC, and Heat Recovery Systems.

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