Wire shelving is adaptable to fit your space, even if your needs change. Add-on shelving attach to your existing chrome wire shelving to extend the length of your shelf or create the perfect corner unit. Attaches to existing chrome wire shelving units for additional storage space Stores up to 800 lbs per shelf, evenly distributed Shelves adjust every 1" along posts S-Hook 2-Packrequired per extra shelf To securely set or quickly remove shelves, tap their corners with arubber mallet. View ourWire Shelving Size Guideto see actual outer and inner dimensions.