Three open tiers on each cube bookcase provide accessible storage for books, decor and office supplies while keeping contents easy to find. Within the 16.5 x 11.5 x 31.5 in frame, two adjustable shelves move through 7 optional heights so you can fit tall binders, storage boxes or display pieces. Engineered wood MDF construction supports up to 55 lbs on the top and 66 lbs across the shelves for reliable everyday use. Anti-toppling kits secure each unit to the wall, non-slip foot pads help steady the base and protect floors, and fastener hole stickers cover visible fasteners for a neater appearance after assembly.