Flat Oval Spiral Duct Observe the below video clip to begin to see the installation of oval duct and fittings. Detect that the reducer getting used is undersized on its collar enabling the oval duct to slide above the collar. They are applying Unistrut with threaded rods as hangers for https://oval-conduit90123.bloggazza.com/35531378/the-best-side-of-oval-conduit