Match your windows (lower sash) visible glass size (width & height) to the chart
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.
If you replace one balancer you should replace both balancers.

Technical Details

Product Details

Package Dimensions
Width : 5.6 inch
Height : 1.1 inch
Length : 6 inch

Shipping Weight: 0 ounce (View shipping rates and policies)

ASIN : B00UCG21WW