Manufactured of high-impact, chemical-resistant plastic. Rigid I-beam construction. Ideal for garage, basement, laundry, and utility areas. Easy, quick assembly, no tools required. 56-1/4" H. x 34-1/4" W. x 14-1/4" D. 4 shelf unit. Capacity per shelf: 100 lb. evenly distributed. No. 904: Charcoal gray No. 904W: White