The Grainger 4-Shelf Steel Boltless Shelving Kit is designed for general purpose storage and material handling applications. It features a 620 lb per shelf load capacity and measures 36"W x 18"D x 72"H. The kit includes 4 particleboard shelves that are 1" thick and coated to resist moisture, spills and abrasion. The steel uprights have holes 1" apart for adjustable shelf height placement. Assembly requires no nuts, bolts or clips. The gray powder coated finish resists rust and corrosion. This shelving kit provides an economical storage solution for warehouses, stockrooms, garages and other locations.