This add-on wire shelving kit will provide you with an additional four shelves of storage space. Attach this kit onto your freestanding chrome wire shelving unit for customized shelving that will support your needs. Design provides additional storage without using too much floor space Attaches to existing chrome wire shelving units to extend the length of shelves Holds up to 800 lbs per shelf, evenly distributed Shelves adjust every 1" along posts Made for indoor use, dry storage only 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. Availability:Ships next business day