Flat Oval Spiral Duct Look at the under video to see the installation of oval duct and fittings. Discover the reducer being used is undersized on its collar allowing for the oval duct to slip around the collar. They're utilizing Unistrut with threaded rods as hangers for your ductwork. We'll https://waylonshwjx.blognody.com/40752361/what-does-oval-conduit-mean