"This was the biggest waste of money i have ever spent for my pet. The sides of the door are cheap plastic that you have to cut yourself and do not fit perfectly. The door is not sturdy and the whole support of the door rest on 8 plastics screws. The screws do not event screw into the door, they rest inside of the large whole that is cut, just holding it in place, not providing any support. Now my biggest problem is that I hate the door so much but because they made me cut the hole so big, I'm afraid I won't be able to find another door that will cover the entire hole. I had the medium Petsafe door that was aluminum and it was great but this one is so horrible I had to write this to warn others."