Dent- and scratch-resistant, rustproof Durable and washable Solid surface shelves prevent small items from falling through. Legs/uprights, constructed of heavy wall polypropylene plastic, interlock for extra strength. Commercial grade, open shelf system. Blow-molded high-density polyethylene shelf engineered for 180 lbs. per shelf load capacity. Constructed of blow molded high-density polyethylene. 180-lb. capacity per shelf. Color(s): Black; Width: 36 in; Depth: 18 in; Height: 74 in.