from the website it said it can be used for outdoor. This is the main reason that I bought it. But when I received it yesterday, there are two instruction inside, one is a simple assemble instruction in English, another one is a product introduction including the manufacturer's website which said it is only designed for indoor use like living room ,office and bedroom.  another reason I gave one star is poor qualify, there are several noticeable hairline cracks on the supporting rail. I will not put any heavy planter on it since I am worried it will not last long. Also the assemble is very hard due to the one screw nut is not in its place, I spent hours trying to fix it, finally I gave up and left a gap between two rails.

Pros: cheap
Cons: poor qualify,not for outdoor use