As usual, Wayfair processed my order and shipped well despite problems with the shipping company actually delivering the heavy cartons to my apartment door instead of leaving the boxes in the lobby.  Once opened, assembly was easy, also as usual with Wayfair products, and the cats just loved the house and, best of all, sitting high up and being able to look out a window!!  It stimulates their development and keeps everyone happy.  Many thanks, Wayfair!!