Kair Beige Gravity Grille 155mm External Dimension Ducting Air Vent with 100mm - 4 inch Round Rear Spigot and Not-Return Shutters

Kair Gravity Grille 100mm / 4 inch with Round Spigot. Plastic 100mm / 4 inch air exhaust outlet round vent with non-return shutter flaps which close automatically when not in use to prevent unpleasant odours noises or draughts flowing back through yo...