Carl, I am ot so sure that dusts spots are generally a problem. I have a darkroom/studio combination, and for years I have been hanging my film on a piece of wire strung from wall to wall. While the film is drying, I am in and out of the room, have the door open, sometimes even the window, etc...(posted 8641 days ago)How about cleaning out a closet to hang your film, if you are having a problem with dust?
chris