These ultra heavy-duty shelving systems incorporate our Giant Open Hopper MAGNUM Bins. Bins offer optional clear window fronts as well as dividers for maximum storage capacity. Shelving is a tough 42" wide with a 350 lb. load capacity per shelf. Smooth powder coat finish which will not rust or corrode. Bins available in Blue, Green, Red, Yellow and Black. 18" x 42" x 75" Steel Shelving unit with 21 QMS532.