Andersen Upper Screen Spring 1997196 (Before 1991) 2 Pack Genuine Andersen Part and Quality, Do Not Be Fooled by Low Priced Knock Offs. For gliding insect screens manufactured from 1964 to 1991. 5/16" wide spring provides tension to screen to keep screen in track. Spring located at the top edge of screen frame, each patio door screen takes 2 springs. This exclusive bundle comes with Colden Solution's Exclusive Shop Cloth to Clean Screen Upper track!