This is probably going to sound dumb at least at first glance, but does anyone see a problem with reversing the installation of an inline duct fan so it acts as an exhaust instead? I am in the process of builing a Finnish Sauna and directly above the entrance into the steam room is my duct work coming from my microwave vent to the backside of my home. I was thinking of putting in a 'T' connector (with backdraft dampers) and reversing an inline fan since it supposedly moves more air for a much cheaper price than your typical bathroom exhaust fans.