Thanks for the reply, but I googled and I believe the term "self venting fan" refers to the manner in which a standard fan is vented, and I am trying to get a DIY Forum member to give me a practical example/construction method -- when my contractor says "self venting fan" what does he really...
I understand that a bathroom should vent to the outside. I have a bath where that is a problem. I have already googled and could not find a good example of a self venting fan. I see 'ductless' fan--a charcoal filter that does not remove moisture. I was hoping that a DIY forum member could give...