Wide and narrow bays alternate up this 61-in frame, so a 17.5-in cube for atlases sits above a 9.5-in slot for CDs instead of five identical shelves that never quite fit. Steel rods run along the open sides and do two jobs at once: they stop a book from sliding off the edge, and they take an S-hook for tote bags, headphones, or a watering can. A cross-braced structure carries 220 lbs in total, adjustable foot pads level the unit, and two anti-tipping kits anchor it to the wall.