Product review (5 stars): THE BEST VENT
I had my first one quite a few years ago and it got broken in a wind storm when the siding got ripped off. I used it for a stove fan vent. It was the best thing since sliced bread. High winds didn't make anything rattle as an ordinary vent would. I could not find one in Canada , so I had to get one from US. It cost me a nice penny but it's worth it. Thanks.