Dimensions Since the closing of the US - Canada border we can only ship from Canada. For US customers the litterboxes can be ordered online from Agrifeed Pet Supplies in Knoxville TN and are at the clinics and stores listed on the stores page.
I bought 2 of the white ones and will be buying more. I breed Persians. My litter box of choice has been a storage box of almost the same dimensions as the NVR Miss Litter box. I love the NVR Miss and think it's the best commercially made box on the market -- and I've looked at them all. It's simplicity is perhaps it's best attribute (or one of them). No gimmicks, just a good quality, easy to care for box with high sides. The slight downward slant in the entry is a nice touch as well. The bottom of the opening is just under 6" from the floor. I'm dropping the overall review down one star to shed a bit of realism here. I didn't see a single review that wasn't 5 stars. Don't get me wrong. It's a 5 star box, but with a couple of caveats. 11.25" high wall will certainly be adequate for most cats, but not all. I have two who can shoot over a 12" wall. The entry is also a little low, but nothing to quibble about. Many of my cats don't use the entry anyway and just leap over the high area, so I'm still sweeping up litter, but this has never bothered me that much. Also the reorientation of the cat due to the door way on the long side doesn't apply to several of my cats who squat right inside the door. One will occasionally shoot out the door. But I can't have everything. Overall it's an excellent litter box and I love the quality of the plastic and the smooth sides. It's very attractive.2012-12-27white
I bought two of these boxes for my cats. The high sides are ideal. However, the opening is very low and both my cats were going over the opening regularly. I am now using strips of 2" blue painters tape on both sides of the openings, seems to do the trick and easy to change if the tape gets soiled. I wish these boxes were made with higher openings, then they would be purrfect. Btw, my cats are seniors and able to jump over the high sides, so the openings being higher would not be a problem for most cats.2017-01-24white
While I really appreciate the concept of this litter box, it is not foolproof. I was initially thrilled to see this product being offered on line and thought it would solve my problem. But now instead of having to clean up cat pee on the floor almost daily, I have to clean it up 2 to 3 times a week. Was it worth the money? Eh. On the positive side I don't have to clean up as often. But I was REALLY hoping to not have to do it at all!2015-06-11white
My cat is about average length. She finds it quite easy to position herself so that her rear is toward the opening when urinating. As she does not lower her bottom consistently when urinating, this means that urine can and sometimes does end up on the floor outside the box. Preventing this, was why I selected this box. The only style of box that does consistently prevent these accidents is the top entry style, which she does use happily enough. But she is nearly 15, and so I was looking for a box with an easy entrance that still prevented accidents, in the event she becomes less comfortable jumping in and out of the top entry. On the plus side, she likes this box well enough, and it scoops easily. I gave it 3 stars for this reason, but it is a “fail” for the never miss aspect of the design for her. By the way, I scoop it twice a day, and she is not positioning herself across the shorter side to avoid dirty areas. Perhaps if the box was not 15 inches wide, she would be encouraged to position herself lengthwise consistently. I suggest making a version of the box that is narrower, for average to smaller cats.2018-07-01white
I recently purchased 3 of these boxes in white and for the most part, I like them (although one of my cats is aiming out the entrance). Be aware, though, that the measurements given on the Product Details page are for the TOP of the box - 21.5 x 15.5 inches. The actual size of the BOTTOM of the box (for the litter) is much smaller - more like 17.5 x 11 inches. Much smaller than what my cats had before (they had a full 21.5 x 15.5). If the manufacturer could make a box where the bottom of the box is actually 21.5 x 15.5 in size, that would be so much better. I see other people have asked for a larger box as well.2015-06-21white
Very disappointed -- my cat just goes over the edge of the doorway, which is even lower than her original litterbox.2016-07-21white