Wooden dowels join the two cubes, so they stack vertically, sit side by side, or split into two separate units when a room changes - and they come apart again without damaging either. Each cube gives 14 x 13 x 14 in of interior space and carries 66 lbs, on top or inside. Open on both faces, they work as a bookcase, a display shelf or a low room divider. Engineered wood at 22.5 lbs for the pair, each measuring 15 x 13 x 15 in. White is one of four finishes with natural, black and rustic brown.