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					Originally Posted by  pektel
					 
				 
				Just looked up that model.  Looks impressive!  I will check on fresh air return system too.  But really that's just a vent that lets in outside air right? 
			
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 Yes, outside air.  You just have to decide whether or not you want air from outside the house or just outside of the room.  One advantage to having air come from inside your house is that it's heated or cooled.  The downside would be the chance of smoke back tracking through the vent when the fan is not pulling the fresh air.  Capiche?