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A built in cavity tray detail within the roof of the brick protects against water ingress
Simply core drill through wall and place vents internally and externally
Grey Gravity Flap Air Vent & Back Draught Shutter
Ducting Adaptor for Underfloor Telescopic vent
Includes silicone hose and fitting parts in black
White Framed Flood Water Defence Protection Airbrick Cover Other Building Materials A built in cavity trayProduct Description Airbrick Flood Water Defence White Frame and Cover Discreet solution to the problems of flood damage caused by unprotected airbricks. In the event of a flood the easy to fit cover clips onto the frame to stop water from entering. Simply use a bead of silicone to create a seal to the brick and screw on the flood defence frame. Designed to cover the opening of a 9" x 3" airbrick. Can be used with any plastic, clay or concrete