The Grainger Approved Boltless Shelving is a heavy duty steel shelving unit that provides adjustable storage space. It features a boltless design for quick and easy assembly, with height adjustable shelves on 1" increments. The unit has a weight capacity of 800 lbs per shelf. It measures 36" W x 18" D x 74" H and comes in an industrial gray finish. The 4 shelf model provides versatile storage solutions for warehouses, garages, basements and more.