Andersen 431 Narroline Sash Balance Unit Number_AR4 This operator fits windows with

This operator fits windows with a visible glass dimension width of 12-5/8"

This sash has an unobstructed glass size of 27 inches wide by 27 15/16 inches high

Andersen Storm Door Touch-Up Paint in Almond ColorTouch-up paint

Andersen 43611 Perma-Shield Gliding Door Colonial grille 7/8" Sandtone Exterior with Sandtone InteriorThis grille fits a door with the visible glass of 43 1/8" wide and 73 7/8" high

This unit takes the place of a screen measuring 23-7/8" wide by 34-27-32" high

Andersen 431 Narroline Sash Balance Unit Number_AR4 This operator fits windows withAndersen Perma Shield Narroline sash balancer 431. Sash balancers are metal boxes that contain a nylon cord under tension. The balancer number is a code for the tension and the cord length. The proper balancer must be used to maintain either the lower sash or the upper sash in an open position. If you replace one balancer you should replace both balancers.