I needed to give my wife back her pantry in the kitchen, so I spent a good part of yesterday rearranging my collection to get the majority of it in one place. I was tempted to buy another shelving unit, but figured I'd try to get most of it on these two. They are as full as they can possibly get!! Each unit is rated to be able to hold 4,800 pounds. I know I'm not close to that on either of them. I will add another unit soon and then probably spend another day reorganizing all of it. Having the pieces in such close proximity makes them more difficult to use when you can't get to them easily. The pieces I use the most are kept in front and on the sides.