My old bathroom vent was just vented into the attic and I would like to run it to the side of my house and that is about 22-25 feet. My bathroom is 11'x6' with a 110 cfm fan. I live in Southeast PA.
Would that be ok?
Also I would like to use 4" insulated rigid pipe but I can't seem to find any? Home depot carries insulation sleeves for 6" but not 4".