It's a very good and sturdy shelf, but if you are buying multiple shelves verify the model/part number. I bought 5 shelving units (which was NOT cheap) and evidently Gladiator changed the design slightly and I have some units that are different from the others. I made it work which was not easy, because I wasn't about to repackage, load up and return 5 units to the store. I'm a little upset that I ran into this issue for the money I spent for the shelves. Overall, I do have to say it is a good shelving unit for garages, basements, etc.