Flat Oval Spiral Duct Check out the underneath video clip 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 slide about the collar. They are really employing Unistrut with threaded rods as hangers for https://ovalconduit24567.buyoutblog.com/36580126/a-simple-key-for-round-conduit-unveiled