I didn't even think about the heat from the house floating up into the attic. I think I'll take your advise and put in an intake fan. I can put the board back in and then cut a hole in it for ducting. That way I'm not getting hot air floating in..I'll be getting cool air pulled in. I've already got the whole attic insulated because I too live in a victorian. O one more question if you have time. I didn't want to start a separate thread for this but... Say I have a 150 cfm exhaust fan and then I connect a 200 cfm exhaust fan with ducting to that one. Will the fans work at 350 cfm or not? The reason is because I have a lot of fans but not many outlets for exhaust. Thanks again for all your help along with everyone else that has added to this great site.