The DEWALT DXST4500 4 Foot Tall, 3 Shelf Industrial Rack was designed and engineered to provide heavy-duty storage for both professional and home use. The three black laminate wood composite decks can each support an evenly distributed 1,500 lb. for a total of 4,500 lb. The uprights, crossbeams, and support straps are all made from powder-coated steel and are designed so that each shelf has 5 support straps to prevent them from twisting or buckling under pressure. The shelves are adjustable in 2.35-inch increments and the locking pins ensure that each shelf is properly installed. For added security, the rack has glass-filled nylon feet to protect flooring and a wall mount bracket to prevent accidental tipping. Each rack also includes 2 stacking plates to join two racks together vertically or connect them horizontally using the shelves alone. For easy assembly two uprights come with pre-installed horizontal and diagonal support beams making getting started fast and stress-free.