I ordered these units expecting them to be exactly the same as other ones with the same product number I had purchased in the past.  Unfortunately, this was not the case.  The shelves are less deep than those of my other three units and are notched in a different place, so I can't even use the extras I had from the other units.  The holes in the upright portion of the unit make for a less stable, and frankly less useful, shelf.  I'm disappointed.