Flat Oval Spiral Duct Observe the below movie to begin to see the installation of oval duct and fittings. See the reducer getting used is undersized on its collar permitting the oval duct to slide over the collar. They can be using Unistrut with threaded rods as hangers to the https://round-conduit66788.blogdosaga.com/36566985/top-guidelines-of-oval-conduit