I'm only giving it 4/5 stars for now because I've only just installed it. After a year if it is still in good shape I'd give it a 5th star. I have a small greenhouse that I built last year. The structure is great but I went a little cheap on the plastic film. It lasted one year and then started to fall apart from sun and weather damage. So, I bought the Happybuy greenhouse poly film. A couple of things I noticed. First, I mike'd it and it is actually 0.006". Second, it is really clear. My back wall I got really tight, and it could be mistaken for polycarbonate solid sheet. I just want to wait till next year to see how it ages.