Vents 4 inch Black Plastic Cowled Air Vent Wall Grill with 100 mm Rear Spigot Ducting Gravity Flap Grille Cover for Hooded Cooker Hood Outlet Kitchen Bathroom Shed Extractor Fan Ventilation

Great product

Arrived promptly, neat and does the job

Good price and decent build quality. Works as intended. However, it's not a great fit for the inside diameter of a solid vent pipe - too loose and no spring clips. Also, there's no fixings supplied, and the screw fixing positions aren't standard - only a problem if you're looking to replace an existing grill, as you'll need to drill new. Flaps open and close, so it does the job.

This looked perfect for what I ordered it for but unfortunately I ordered the wrong size so had to return it. No issues with seller and got my full refund quickly.

4th one I've bought. Looks good

Perfect for the job

Flaps are very fragile so need to be careful when installingOtherwise fit for purpose

Flap doesn’t quite close properly when screwed to wall, due to screw head rising slightly higher then plastic body. But still good value reduced wind back flow by about 80%.