Bruiser, when I had my eagle we had the same problem,, Went to home depot bought screen track and screen, made to fit openin g, when we opened the window we would just set them in place, remove to close, They sell frame and corners to make your own, pretty cheap if I remember correctly, Since I bought the prevost ,Ijust put a sign up telling them bugs to BUG OFF, they know better now,,,,,,,,,..LOL...........