Has anyone ever replaced their old 6.5 inch powered bath vent with a 14x14? I'm installing an air conditioner in the old 14" hole and I thought I might replace the non-working bath vent with it in my '84. Does anyone know if the roof frame on the '84s is wood or steel? I am sure I'll find out when I take the old hatch out, but I thought I'd see if anyone has done this before and been through the steep part of the learning curve? CAMP ON!

Enchanted Camper,
Speaking for myself, your question would be a lot easier to answer if you included a picture of your bathroom vent. I am somewhat confused by the 6.5" vent size. My 1969 has a round bath vent and fan that is about 6" (maybe 6.5) in diameter. But I would have thought that by 1984, Hi-Lo would have gone to a more modern set-up.
Jim

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1967 17' Hi-Lo Bon Voyage (1967-1969)
1969 19' Hi-Lo Bon Voyage (1969-2011)
2004 27' Hi-Lo TowLite (2010-present)
2015 Chevy Tahoe LTZ

Is the old fan still in? Take it out and replace the bearings and it'll work again, I know i'll be doing that soon with mine