Genuine Andersen Upper Screen Spring 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. Genuine Andersen Part and Quality, Do Not Be Fooled by Low Priced Knock Offs.
