MetroMax® i Add-On Shelving Unit, 72"W x 18"D x 63"H, rust proof, 750 lb capacity per shelf, 2000 lb. capacity per unit, includes: (4) open grid polymer shelves with reinforced type 304 stainless steel corners and removable polymer shelf mats, bag of (4) wedge connectors included with each shelf, (2) polymer posts & (8) "S"Hooks for an end-to-end configuration, Microban antimicrobial product protection, KD, NSF