Boltless Shelving, Low Profile, Overall Depth 18 in, Overall Height 84 in, Overall Width 42 in, Shelf Gauge 14 ga, Shelf Adjustment Increments 1 1/2 in, Steel, Particleboard, Steel, (10) Beams, (2) Posts, Includes Decking Yes, 550 lb, Whole Unit Load Capacity 2,750 lb, Add-On, Open, Post Gauge 16 ga, Number of Shelves 5, Maximum Post Load Capacity 8,000 lb with Beams Evenly Spaced at 24 in, Powder Coated, Light-Duty, Gray