Andersen 531 Narroline Sash Balancer Category_Perma Shield Gliding (1968-Present) This screen measures 21-5/16" wide

This screen measures 21-5/16" wide by 30-1/2" high

Andersen DH3456C Combination Storm and Screen Unit - Sandtone Color

Andersen 2852 Narroline Double Hung Upper Sash Sandtone Exterior with Natural Interior Works with Andersen Narroline Double Hung 1968 to 2012

Left hand #1361208 Right Hand #1361210

This kit fits a window with a visible glass size (lower sash) of 28-7/16" wide by 33-15/16" high

Andersen 531 Narroline Sash Balancer Category_Perma Shield Gliding (1968-Present) This screen measures 21-5/16" wideAndersen 531 Narroline Sash Balancer Works with Perma Shield Narroline Double Hung Windows manufactured from 1968 to Present. 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 the lower and upper sash in an open position. If you replace one balancer you should replace both balancers. Note: For instructions on how to