Boltless Shelving, Z-Beam, Overall Depth 18 in, Overall Height 120 in, Overall Width 48 in, Shelf Gauge 14 ga, Shelf Adjustment Increments 1 1/2 in, Steel, Particleboard, Steel, (4) Posts, (5) Deck Levels, Includes Decking Yes, 850 lb, Whole Unit Load Capacity 4,250 lb, Starter, Open, SCS Indoor Advantage(R) Certified, Post Gauge 14 ga, Number of Shelves 5, Maximum Post Load Capacity 8,000 lb with Beams Evenly Spaced at 24 in, Powder Coated, Medium-Duty, Gray