B&Q - Black Gravity Grille 150 mm / 6" External Ducting Air Vent With Round Spigot And Non-Return Gravity Shutters For Extractor Fans

190 mm x 190 mm Plastic ducting air inlet / air outlet with gravity shutters - 6 inches / 150 mm 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. Stops unp...