Efficiently expanding existing14"d starter solutions, these add-on wire shelving units allow your storage system to grow with your needs. Attaches to existing starter unit to extend length of shelves for more storage space Durable chrome-plated steel construction 500 lb capacity shelves can be adjusted easily in 1" increments 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