I have a kind of broom closet with very high ceiling (old building) that I wanted to use as a shoe closet. First, I ordered only a shelf, but after still air was up yet a second, with whom I have still increased. Practically the possibility that I could assemble the rack directly into the broom closet. If I had I set up in the hallway, I could not get it through the door ... My husband has secured the whole thing with two screw rings on the wall. So everything is absolutely stable. I have built it without any problems alone. However, I absolutely recommend a rubber hammer!