while these shelves are a great value for the money, and are great for keeping things up and out of the way, the bolts the company provides are junk. they broke off after just one day (one with just one box on the shelf). we had to purchase some lagbolts which are doing the job now, but theres no reason the bolts should all break on a brand new item. also, unless you are using a smaller than normal size tote, you can only fit 6 per shelf (we use standard 18 gallon size totes, and they do not fit 2 high). the box shows that the shelves holds 6 totes, with 2 high for a total of 12, but this is only if you are using smaller than normal totes. overall though, i'm still happy that this will keep my boxes up and out of the way.