This storage shelving is what I needed in my garage. I do like the fact that the shelving is solid. I'm a woman in my 70's and it was straight forward to put together. There was some frustration involved as the sides with the keyholes for slipping the side pieces with the "nubs" that fit into the keyholes weren't all squared off. The rubber mallet is essential in putting this shelving unit together -- for tamping down side pieces and for a few good whacks on the keyhole pieces to move them enough so everything fit. The other issue was that some of the actual particle board shelves slipped in easily and some were downright obstinate. That said, it's a sturdy shelving unit and putting it together, rubber mallet in hand, was a great way to work off some "steam."