Each shelf carries a 3.5-in raised edge, so items stay put on a unit that has no back panel - a practical detail on open industrial shelving. The three tiers can be set at different heights during assembly to suit what is being stored. Every shelf holds 50 lbs. The frame measures 27.5 x 14 x 31.5 in and weighs 28 lbs in metal and rustic brown engineered wood. At this height it works as a sideboard-depth unit under a window or against a wall, and the open construction keeps a small room from feeling closed in.