"Heavy-duty Edsal Ultra Rack 5-shelf system is made with 16-gauge steel frame and 5 particleboard shelves to support up to 5000 lbs. of evenly distributed loads. Extra-wide storage with a full 5 feet per shelf Assembles in minutes with just a rubber mallet - no nuts or bolts Offers all the features you'll need with the durability to last a lifetime. U.S.A. Material Steel frame, particleboard shelves, Height in. 72, Total Capacity lbs. 5,000, Finish Type Powder-coat, Application Heavy-duty storage, Color Black, Shelves qty. 5, Adjustable Yes, on 1 1/2 in. centers, Shelf Dimensions W x D in. 60 x 18. Five shelves adjust on 1 1/2in. centers Shelves rest on a recessed ledge for a flush fit and larger shelf opening Unique delta-shaped beam provides additional strength"