150 mm 6 inch External Ducting Gravity Wall Shutter Grille Stop Back Draught Draft Ducting Air Vent with Round Spigot and Non-Return Shutter Heat Recovery System

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Product description

  • External grille size185x185mm. 6 inch 150mm diameter hole connector - Grey Plastic Ducting Air Inlet Air Outlet with Gravity Shutters - 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.
  • Easy to install, just push-fit duct and fittings together. Screw fixation is also possible.
  • 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.
  • Suitable to use in compliance with Part F Building Regulations.

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