Bulk Storage Rack Add-On Unit Width 48 In. Depth 48 In. Height 120 In. Load Capacity 4150 lb. Number of Shelves 3 Capacity per Shelf 4150 lb. Beam Capacity 4150 lb. Medium Gray Material Steel Decking Material Particleboard Finish Powder Coat Adjustable Increments 2 In. Includes (6) Beams Front to Back Supports and Frame