Vents 6 inch Black External Gravity Grille Air Vent Cover with Removable Blades 150 mm Extractor Fan Back Draught Shutter Covers Ducting Tumble Dryer Bathroom Outside Wall Ventilation Hose Duct Grill

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Product description

  • This gravity grille cover can be used as part of a long duct run for a variety of purposes whole house ventilation, air conditioning, passive ventilation, positive entry, HVAC, heat recovery systems and to cover bathrooms, kitchen air conditioning systems.
  • The grille has four non flaps with a gravity flap. The closure works by air extraction, which opens the blades to allow air to pass through. When the exhaust fan or ventilation system is not in use, the grille shutters close automatically. This is intended to protect your ventilation duct from unpleasant smells and noises and prevent the ingress of air or rain as well as the ingress of objects or vermin when not in use.
  • Easy and safe installation. Simply snap the channel and brackets together. If necessary, seal using a method of your choice.
  • The gravity outlet is manufactured in accordance with the building regulations approved document F."

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