I was so worried based on reviews from other Cat Litter Box Enclosures that when I opened the box the parts would be messed up or wouldn't fit together - not the case.  Arrived in great condition, instructions were easy to follow and everything fit as expected!  The only reason I am not giving it a 5-star rating is because I ordered a "grey" box...the product I received was as White as it can get!  I chose to keep it because of how nice it looked and it still matched where we were going to put it.
Oh!  The cat likes it too!  He took to it with no problem or issues.  Fits just fine in it - he's about 15 pounds - and gets in & out with no issues.