Ø 100 mm / 4 in Black Cowled Gravity Flap Wall Outlet Non-Return Valve Cowl Duct



Ø 100 mm / 4 in Black Cowled Gravity Flap Wall Outlet Non-Return Valve Cowl Duct Cover Air Vent Grille. Easily removable cowl section for easy installation and cleaning. Available in White, Brown, Grey. Cowl protects against driving rain and wind entering your property via the duct run. Use for cooker Hood, bathroom, toilet, kitchen ventilation fans & tumble dryer extract. UK Based and VAT Registered Seller.