I have a small bathroom (less than 80 sq feet). I am installing an exhaust fan on the ceiling in my upstairs bathroom. I prefer to vent the duct out the attic wall rather than the roof. The wall is approximately 15 feet from the location of the exhaust fan. My question is there a maximum duct work distance or is there a certain cfm fan or fan speed I need to blow open the vent at 15 feet? I plan on using flexible metal duct.
Thanks!
Thanks!