Flat Oval Spiral Duct Look at the underneath video to begin to see the installation of oval duct and fittings. Observe that the reducer getting used is undersized on its collar letting the oval duct to slide around the collar. These are utilizing Unistrut with threaded rods as hangers with https://cristianypdqe.vidublog.com/35628779/the-best-side-of-round-conduit