Two matching 5-tier towers ship together, and each mixes 22-in open-back shelves with 8-in closed-back cubes rather than leaving every bay wide open. The closed cubes give small objects a back to rest against, so pens, ornaments, and cables cannot be pushed through onto the floor, while the open shelves keep the airy geometric look that makes these units worth having. Each frame runs 35.5 in wide and only 8.5 in deep, with 9 in between shelves and a 200-lb capacity, plus two anti-tipping kits.