This heavy duty storage rack features heavy gauge cold rolled steel with welded uprights and four shelves each holding 1500 lbs for a total 6000 lbs capacity for bulk inventory and machinery. Tool free height adjustment with 20 locking pins keeps shelves firmly in place with wall mounting kit and 10 plastic foot pads for stable tip resistant installation. Diagonal braces eliminate lateral movement with anti rust black coating for harsh environments and 78.8 inch width maximizes vertical space for warehouses garages or workshops.