any idea can be "crap" with crooked hands, and this is exactly the case. It's actually foil. And the fastening to the wall is also very flimsy, hanging a heater on it is a whole problem not to hang it exactly. I didn’t really have time to use it, I just hung it and couldn’t stand it - I’m writing a review rather. I turned it on for 15 minutes, so that they would burn and not understand the heaters. so I noticed that when it cools it warps and it makes metallic sounds, quite loudly. in general, tSee full review