Buyer beware! I bought this for my sheltie pup, and he got out of it. We have to put something heavy on top like a box so he wont get out of it. It is not sturdy enough and if we wernt at home who knows what would of happend!! I will always use the ones with the screws from now on. It wasnt going to be the main one I just wanted it since I just got him and the kennel we had wasn't put together.