The Grainger 4-Shelf Steel Boltless Shelving Kit has a 620 lb weight capacity per shelf. It is made of steel with a gray epoxy finish and measures 48"W x 18"D x 74"H. The kit includes 4 shelves, 4 posts, 16 foot plates, and 32 connectors. Assembly required using included hardware. Designed for industrial storage use. Provides an economical storage solution.