Pros: pretty solid, relatively easy to assemble
Cons: magnetic connections that hold the door closed don't really work, so I'll probably need to install a new closing latch mechanism; also, although it definitely cuts down on litter being thrown everywhere by crazy cats, litter still sneaks out the bottom under the doors (again, something I'll need to modify on my own).
Overall: pretty good for the money, although a few modifications would make it a 5.