Flat Oval Spiral Duct View the below movie to see the installation of oval duct and fittings. Notice the reducer getting used is undersized on its collar permitting the oval duct to slide more than the collar. These are making use of Unistrut with threaded rods as hangers for the https://round-conduit56677.blogacep.com/41941607/the-definitive-guide-to-oval-conduit