This item is dangerous junk. Had to tie the sides together and secure top to sides less it collapse on my cat.  Had to tie the shelves on because they did fall on him.  Customer service was useless.  Recommend spending less money to get a far superior product in the Frisco line sold by Chewy.  I did.  This is an honest review.  I doubt that Wayfair will post it. Will never ever shop with Wayfair again.