"I always use the cowl type of extractor cover - much better than the flat slatted type where wind howls through or the flappy type which are noisy in strong winds. It costs a bit more but worth the extra. Good quality product."
"Used as a replacement for worn out cowl. Easy to fit, can be fixed with screws but it is very lightweight so can be stuck to wall with a few blobs of silicone sealant. looks neat, does the job. Worst feature is that it is not very strong, flaps are a bit flimsy, but other makes are not much different, so time will tell"
"I brought 2 of these and whilst they look good, they are very poor quality. I don't normally write reviews but felt that I had to in this case. The little hinge on the flap broke off when I place it down on the side, how's it going to cope with the wind blowing it? Also 1 of the plastic lugs broke off when I was putting it back together. Really disappointing considering the make of it."