Polypropylene Ventilation

Kair Brown Cowled Outlet Grille 183mm External Dimension Wall Vent With 150mm - 6 inch Round Rear Spigot and Backdraught Shutter

Kair White Louvred Wall Vent Grille 155mm External Dimension with Flyscreen and Round 100mm - 4 inch Rear Spigot

Kair Brown Cowled Outlet Grille 155mm External Dim Wall Vent With Rectangular 110mm x 54mm Rear Spigot & Backdraught Shutter

Kair Brown Gravity Grille 155mm External Dimension with 100mm - 4 inch Round Rear Spigot and Not-Return Shutters