Andersen 939 Narroline Sash Balancer Unit Number_34210 Andersen M640 Sash Balancer with

Andersen M640 Sash Balancer with Screws

Andersen 30210 Narroline Double Hung Lower Sash White Exterior with Natural Interior Works with Andersen Narroline Double Hung 1968 to 2012

Andersen A55 Perma-Shield Awning Screen - Stone Color

Andersen DH3042 Combination Storm and Screen Unit - White Color

Bright Brass and more

Andersen 939 Narroline Sash Balancer Unit Number_34210 Andersen M640 Sash Balancer withAndersen 939 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