I would guess you can block off the fresh air supply. With a 2018 coach you must be missing something. There just has to be a way to have the air blow through the dash vents only. Just has to be a way to recirculate the air and change to outside air intake although I don't see how an outside air supply is any benefit especially in a MH.
Please advise.
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Good Luck and keep us posted please. "Q"
1999 Newmar, Mountain Aire 3768, V-10, CAI, Headers.
"Spending our kids inheritance one trip at a time"
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