Gravity Vent White 100mm
A vent/grille for use with exhaust fans. It is normally placed on the outside wall.
It has gravity flaps that opens up when the fan runs. (the fan blows the flaps open with the air it pushes). It is ideal for keeping insects out. In windy areas, the flaps can move due to the wind creating some noise.
This is a 100 mm vent, it is a white colour and has been treated to be safely placed outside.