Our unique patented quick adjust suspension hooks allow middle shelves to be adjusted, added or removed without disassembly or tools. Shelves simply lift off hooks and replace in seconds. Wire shelving benefits include minimal dust accumulation, excellent visibility and light, sprinkler and air penetration. Unit includes 4 posts, 2 fixed 600 lb. capacity shelves for top and bottom levels, 2 quick adjust 400 lb. capacity shelves and 8 suspension hooks. All shelves adjust at 1" increments. Genuine chrome plated finish.