A 63-in bookshelf whose ten cubbies come in four different widths, so a run of 16-in art books, a stack of paperbacks, and a row of slim journals each land in a slot that actually fits instead of leaving half a shelf empty. A closed back panel keeps items from sliding out the rear, which counts on a frame only 10 in deep. The structure is rated to 200 lbs in total with 33 lbs on every layer, and thickened boards resist bowing across the widest span. Foot pads guard the floor and a wall fixing steadies the 24-in wide frame.