Plastic ducting air inlet / air outlet with gravity shutters

and round male spigot on the back of the grille for indoor or outdoor use.

Designed to terminate your extract duct to an external wall.

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.

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

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