Flat Oval Spiral Duct Enjoy the underneath video to see the set up of oval duct and fittings. Notice which the reducer getting used is undersized on its collar enabling the oval duct to slide more than the collar. They may be applying Unistrut with threaded rods as hangers for https://ovalconduit23455.idblogz.com/37150709/round-conduit-fundamentals-explained