I have 4 cats and several litter boxes. This litter box enclosure is large enough to contain the electric litter box we have as it even has a pre-built openong for the electic cors. My largest cat had no issues going in or out and by adding a shag tempurpedic crate cushion on top, the babies can sun bathe and enjoy watching our chickens in their run. I HIGHLY recommend this item to everyone. Assembly was easy and rapid and I was able to complete alone.