Vertical Support System Are Manufactured in Powder Coated-mild Steel(Ms). Standard Size of 30x30mm Ms 2 mm Thick Square Pipe Mostly Use for Heavy Duty Shelving System.it Use for Floor to Wall Fixing for Insert Channels and Brackets.vertical System Used for Retail Shops, Wholesale Markets, Boutiques, Shopping Malls, Shelving Racks, Super Market Racks.