I think your best bet is an insect screen. I have one at home that pops right inside my window frame. Modern frames have standard dimensions, so it's likely tri

I think your best bet is an insect screen. I have one at home that pops right inside my window frame. Modern frames have standard dimensions, so it's likely trivial to find an insect screen that fits yours. Once you have this in place I don't think you'll be looking any longer for a solution from the Star Wars realm.