EMT Conduit is used to support larger duct sizes or smaller duct in high pressure applications. We have 1/2” and 3/4” standard 10’ lengths in stock and can offer up to 4” upon request. All our conduit will be UL 797 certified and in accordance with SMACNA Third Edition 2005 internal conduit pressure tables. Haltom Industries is your one stop shop for all your connection and structural needs.