This is not an item that has quality to it.  I purchased this in the spring, cats loved it. So I lifted it onto a wooden foundation to support it better and so my cats could come in and out from their bedroom window. We have had below average rain and the top of this item is all warped and leaking.  I will have to build a weather proof roof in the spring to replace the one that came with it.  It is advertised to be waterproof but fails miserably in that category.  What this has done for me was give me a template to add additional screws, nails, boards to stable it so my cats don't get spooked.  Wish I had known it was going to begin to rot before the return warranty expired.