Flat Oval Spiral Duct Look at the underneath online video to begin to see the set up of oval duct and fittings. Discover which the reducer getting used is undersized on its collar allowing the oval duct to slide over the collar. They're making use of Unistrut with threaded rods https://round-conduit02334.blog5star.com/37123296/the-fact-about-oval-conduit-that-no-one-is-suggesting