A foam stopper has been installed to the inside of the hood to keep this air vent open and close quietly.The air vent protects against, birds, rats and rain. Superior alternative to plastic cowls and grilles.
eBay
4 Types White Air Vent Extract Valve Grille Air Circulation Vents Cover 100/150mm Round Ducting Ventilation Cover Various Shapes
Aliexpress UK
EXCELLENT QUALITY The calimaero WGQW serves as a ventilation cover for inline extractor fan. Ready to install with dowels and screws included. The high-quality Anodized Aluminum is robust, versatile, and easy to clean.
eBay
6 Types White Air Vent Extract Valve Grille Air Circulation Vents Cover 100/150mm Round Ducting Ventilation Cover Various Shapes
Aliexpress UK
External Wall Wind Baffle Vent Cover Draft Excluding Air Ventilation 100 125 150. Blauberg External Wall Wind Baffle Vent Cover Draft Excluding Air Ventilation 100 125 150. Modern, wind and sound reducing wall mounted baffle vent with UV protection.
eBay
150mm Aluminium Rectangular Cabinet Wardrobe Air Vent Grille Ventilation-Cover For Air Conditioner Cabinet Grille Black Cover
Aliexpress UK
Single row of fixed horizontal blades. Louvre has a square spigot on reverse side. Sizes are nominal. Weather louvre (mill finish). For wall mounting. Sizes are based upon your hole size. Actual appearance/scale of product may vary dependant on size.
eBay
Air Vent Grille Circular Indoor Ventilation Outlet Duct Pipe Cover Cap 75mm/100mm/125mm/150mm/200mm For Bathroom Kitchen Office
Aliexpress UK
Easy screw fixing. Suitable for internal and external mounting.
eBay
eBay
100/125/150mm Stainless Steel Extractor Fan Vent Cover Outlet Wall Air Filter Grill. These features provide increased durability while ensuring optimum exhaust vent functionality in various settings.
eBay
==========.
eBay