MetroMax® Q Mobile Shelving Unit, 48"W x 21"D x 76"H, (4) open grid shelves with removable polymer shelf mats over one-piece epoxy coated steel frames, (4) polymer posts, Microban antimicrobial product protection, (4) swivel rust resistant polymer casters with 5" (127mm) polyurethane wheels (2 braked), KD, NSF