Very solid product and easy to put together. My only complaint is in regards to the way the pieces are placed in the package since the top piece of the enclosure is facing outwards with only a small width of styrofoam protecting it.  If FedEx damages your packages like they did mine, this will result in unsightly marks to the top surface.  Other than that, just be sure to consider the inside height as it is pretty cramped for our larger cat (16 lbs). The smaller cat took to it instantly though.  Would definitely recommend.