We have a 9 cabinet that was pretty useless. I got this and it solved the problem. The unit doesn't accommodate a lot of stuff, but that's the nature of a 9 face frame cabinet--you lose a lot of space. The shelves on this unit are 19.75 deep and 4.25 wide after the metal side rails are taken into account. The top opening is 3.75 since those side rails are wood. We only installed two of the shelves and use it for storing tall bottles.As other reviews have said, it wobbles from side to side at the top. We added some thin felt furniture pads to the plastic bumpers to narrow the gap and keep it straight. It works perfectly now, but I can't credit the manufacturer with that one, so 4 stars.
Rating: [4 of 5 Stars!]