Yes, will be sucking air from room through air filter, through duct, through fan, through basement window to outside. Intake will be in same window. Can't put filter on outside but I could raise it off the floor and reduce the duct size. Good idea. Intake air will come from outside. Was thinking about winter time and wondering if i wrapped the intake duct with some of that electrical heat tape, would that warm the duct enough to warm the intake air? Usually they use that stuff on outside pipes to keep them from freezing but would it work on an airduct? I have to have an elbow cause the window is in the corner so I have to come off with an elbow so I can service both rooms. The area is literally perfect, High on Rhizome's Value Chart:thumbsup: