Sturdy, heavy and nice looking. I was able to assemble them all by myself with a bit of time and patience. I ended up having to buy open litter pans because none of the covered pans would 1) fit inside and 2) have the openings line up properly with the door. Heres what happened - 150 later I had to junk both enclosures bc my boy cat peed all over the inside of both enclosures. The Takeaway, good for girl cats not good for boy cats.