What's the trick to running flex duct over a congested plumbing rack without pinching it?
2nd YearFlex Duct & GrillesYELLOW · Check First
Do not rest the raw flex duct directly across hard copper lines or threaded rods where it will crimp or eventually wear through. * Use an adjustable sheet metal saddle hanger or a piece of wide unistrut to bridge across the plumbing workspace, providing a flat platform for your flex run to glide over cleanly.