I found this litter box enclosure pretty easy to put together. I like that the opening can be on either side and that this enclosure is a little bigger than the smallest ones and a bit smaller than the largest ones. My space is on the small side and this fits just right. I was concerned my kitty wouldn’t like it but he seems fine with it and it looks great!  I store his clean littler, his scoop and small trash bin on the top, saving quite a bit of floor space.