These do not work with the scoopfree crystal automatic litter box. The dimensions on this description are not detailed enough and only give you the entire box, not the litter box space. If you put a bulky litter box or the scoopfree automatic box in, you cannot put in the middle tier and the litter box fills the entire cabinet and blocks the bottom half of the cat hole opening. I don’t want the kitties squeezing into the box to use the litter box. This was supposed to make it easier to hide my big box and instead it’s just a medium size, fairly flimsy cabinet that hides a smallish regular litter box. Disappointed in both the quality and the size. Also the sides are black, not wood grain as pictured. (Wood grain top, bottom, back, and doors, black sides.