Yes! This is what we did, brought an old standing fan down from attic and it blows into the "window" and out through vents on opposite side. The bottom has mud on it now, but it's never dusty! Then in the morning when I'm opening coop, I turn it and face it towards the run.I've found putting the fan right against the window mesh, blowing into the coop,
keeps it cleaner and even blows some of the stirred up dust out the other windows/openings.