Pleasantly surprised. One bottom corner was mashed slightly in shipping but not a problem. Assembly was simple and quick, ended up quite square. Cardboard back not a problem at all, expected in this kind of product and suitable. Tip: assemble on a card table, including clipping hinges in as last step before securing to wall. Very difficult to clip hinges in while vertical, and in fact would have been impossible because center hinge needed to be adjusted. Lay assembled product on its back on card table and it will be easy to see what hinges need to be slid a bit to line up. Bought to hold 14” jigsaw puzzles, which it does, but have to mash the 14.25” one in. Hinges obstruct width, as does door - actual width to slide something straight in is 13.8” because of door, so you have to tip a 14” puzzle, meaning you can’t fill each shelf to the top with a 14 incher. Not a deal breaker. Works for us for at least a few years until we build a built-in.