Gravity Flaps Louvre Cover Air Vent Grill Ventilation Duct Fan Wall Grille New

outlet with gravity shutters and round male spigot on the back of the grille for indoor or outdoor use.

Non-return shutter flaps close automatically when not in use. Gravity flap - no need for springs that could break. Gravity operated flaps that

close when not in use. Designed to terminate your extract duct to an external wall. Easy to install, just push-fit duct and fittings together.

Perfectly suited

bathroom or kitchen extractor fan, hydroponics fan, or in-line extract fan.

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 heat recovery systems

Stops: unpleasant odours noises draughts flowing back through your duct