4" External Air Vent Cover

External Hooded Wall Vent 100mm circular spigot of wall vent connects to telescopic round tubing or flexibe hose, wrap foam strip around circular spigot of wall vent to provide a tight joint. 100mm / 4inch cowled vent wind baffle Grille ideal for mounting on an External wall that ...External Hooded Wall Vent 100mm circular spigot of wall vent connects to telescopic round tubing or flexibe hose, wrap foam strip around circular spigot of wall vent to provide a tight joint. 100mm / 4inch cowled vent wind baffle Grille ideal for mounting on an External wall that is in an exposed position Perfect external hooded wall vent hood where an outlet is open to bad weather.

The baffled Grille stops wind from rattling the shutter and also stops back draft when an extractor fan is switched off. Ideal for wind and rain protection. 100mm / 4inch diameter duct connection fits standard ducting or wall sleeves.

Dual blade damper for Anti-backdraught. Easy screw fixing and connection to ducting. Duct cowling baffle and blades are easily removed for fitting & cleaning.

Specification Size: 135mm x 135mm with Ø 100mm duct connection Colour: Brown Features: Dual Blade Ant-backdraft flaps Perfect for: Bathroom Extractor Fan Tumble dryer Cooker hood Kitchen Extractor Fan Anti-backdraght flaps should be removed if used with tuble dryers.