Cube widths step from 10 in through 16.5 in to 24.5 in as the S-shape winds upward, so the silhouette changes with every tier rather than repeating. The 31.5 by 8.5 by 39.5 in frame stays shallow enough for a hallway or a spot behind a door. Shelf ratings run 11 to 33 lbs by level with 44 lbs on top, and two anti-toppling kits plus protective pads finish the 30 lb assembly.