This is a great size litter box for my three cats. It seems to be very roomy for them to be able to turn around inside. The door is somewhat see through and does not extend all the way down which is nice for the cats to be able to see out of the box and to easily be able to get in and out of the box. It is easy to take the cover on and off. The only thing I would change is that the cover seems very flimsy when it is off the litter box so hopefully it will hold up well after using it for awhile. Overall a great box for multiple cats of different sizes/weights.