Unique construction requires no nuts or bolts & assembles quickly & easily without tools. Versatile design allows two different set-ups: a five-shelf, 72 high storage unit, or a 36 high workbench. Shelves adjust in 1 increments for storage flexibility. Steel frame with a durable powder coat finish. Holds up to 650 lbs. per shelf (evenly distributed). Shelf Count: 5; Shelf Thickness: 0.5; Shelf Capacity (Weight): 800 lbs; Material(s): Steel.