Flat Oval Spiral Duct Enjoy the under video to see the installation of oval duct and fittings. Observe the reducer getting used is undersized on its collar letting the oval duct to slip about the collar. They are working with Unistrut with threaded rods as hangers with the ductwork. This https://oval-conduit12344.blogrelation.com/42900950/a-simple-key-for-round-conduit-unveiled