One cube on its own is a bedside stack or a record crate; buy several and they build the shelving a room actually needs. Each unit measures 13.5 in by 11 in by 12.5 in with a 12.5-in by 10.5-in by 11.5-in interior, holds 55 lbs, and weighs only 7.5 lbs empty. Plastic angle brackets pull the corners square and screw hole covers hide the fasteners, so a run of cubes still looks like one piece of furniture. For safety, stack no more than four cubes vertically, and use protective foot pads on the bottom unit.