I needed a replacement cover for a portable garage I purchased 10 years ago. This is the second replacement cover I've purchased. The first one only lasted 2 seasons. (From another Company)  I saw that the majority of vendors at the Brimfield Fair were using these exact tops and thought they most likely have more knowledge than I. This one seems heavier, as far as ,the material goes. I like the way the cover lays on the frame, and where the grommets have been placed. I did need to use 2 Six inch bungees for every grommet hole... as to not pull too hard on the cover.