When all is said and done it appears to be alright. But let's back up....Box came very tattered and looked like it was sitting on a shelf for years. I don't remember anything saying assembly required but if you don't want your hands cut open you better have a good pair of gloves. There are very sharp edges and the whole thing needs to get screwed together before you can place it on the chimney. The instructions are a joke so don't even go there. After spending about 2 hours trying to figure out how it goes together I finally got it but of course one screw was missing (with about 20 extra that have no purpose). Looks like regular old sheet metal to me but only time will tell how it holds up.
marty schweer 
