This metal cabinet took about an hour to assemble. Be sure to follow the instructions carefully. The cabinet can be mounted directly to a wall or hooked onto a GearTrack. The instructions state that you need 2 GearTracks, the lower one used as a spacer so the cabinet hangs straight. We made our own spacer out of a block of wood because our GearTracks aren't hanging on top of each other. It comes with two removable shelves, and we decided to just use one to fit the items we have in it. [This review was collected as part of a promotion.]