Ventilation

Grey Gravity Flap for 100 mm / 4" Round Wall Outlet - Ventilation Duct Cover with Non-Return Shutters and Rear Spigot

Timco - Timloc Internal Plastic Hit and Miss Louvre Grille Vent - White - 1208W (Size 260 x 104 - 1 Each)

Timloc Louvre Grille Vent Flyscreen White - 242 x 89mm

AirTech Grate Cover Gravity Aerator Hatch (125 mm Pipes) White External Ventilation Cover

White Gravity Flap for 100 mm / 4" Round Wall Outlet - Ventilation Duct Cover with Non-Return Shutters and Rear Spigot

Black Gravity Flap for 100 mm / 4" Round Wall Outlet - Ventilation Duct Cover with Non-Return Shutters and Rear Spigot