This heavy duty steel storage rack features heavy gauge cold rolled steel with welded uprights and four shelves each holding 1000 lbs for a total 4000 lbs capacity for bulk inventory and machinery. Tool free height adjustment with 20 locking pins and wall mounting kit plus 10 plastic foot pads for stable level tip resistant installation on any surface. Diagonal braces eliminate lateral movement with anti rust black coating and 78.8 inch width maximizes storage for warehouses auto shops or garages with simplified assembly.