Andersen Upper Screen Spring (Before 1991)
- Works with Perma-Shield Patio Door screens manufactured before 1991.
- Works with earlier versions of Frenchwood Gliding and Frenchwood Hinged patio door screens from 1987 to 1991.
- This spring is located on the top of screen frame to provide tension to screen to keep screen in track.
- Each patio door screen takes 2 springs.