Forum Discussion
dougrainer
Oct 23, 2015Nomad
Very few RV's have METAL ducts in the ceiling. It is usually foam core flat board that is cut to the rectangle you want and then the edges are foil taped or glued. This has to do with WEIGHT and the fact that foam core board at the OEM level is easy to fabricate and install. Metal is not used due to the inherent NOISE that can happen especially in a Motorhome. Not a concern in Towables, but as I stated, weight IS a concern. Some ducting may appear metal, but that is due to the shiny silver inside of the foam core board. Doug
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