Poorly designed, holes in cross-members are inset so you literally have no chance of lining up screws with holes so there will always be one that is forced into the corner with no possibility of getting in lined up with the holes in the back. I’ve taken it back apart three times, changed bolts, turned it around and still can’t get all four holes to align. And YES I did not tighten the others at all. That isn’t the problem, poor design. I’m returning.