Flat Oval Spiral Duct View the below movie to see the installation of oval duct and fittings. Notice that the reducer getting used is undersized on its collar letting the oval duct to slip more than the collar. They are working with Unistrut with threaded rods as hangers to the https://ovalconduit02345.ziblogs.com/36853928/the-best-side-of-round-conduit