COWLED WITH Backdraft Damper 140MM X 140MM. The cowled grille protects against rain and wind entering your property via the duct run. Cowl projection 80mm. GRAVITY WALL GRILLE Ventilation, 140 X 140MM.
Cowl Gravity Flap Wall Outlet Non-Return Valve Cowled Duct Cover Air Vent Grille
Cowled Gravity Flap Wall Outlet Non-Return Valve Cowl Air Vent Grille Duct Cover
