Andersen 100 Series Single Hung Sash Balancer Number 3540 Unit Number_3068 Screen measures 24-13/32" wide by

Screen measures 24-13/32" wide by 20-5/32" high

Andersen 100 Series Sash Balance Number 3730 Works with Andersen 100 Series Single Hung Fibrex windows manufactured from 2008 to present

This sash has an unobstructed glass size of 29 inches wide by 21 15/16 inches high

This kit fits a window with a visible glass size (lower sash) of 20-7/16" wide by 13-15/16" high

Fits on the left side of the window as viewed from the outside of your home

Andersen 100 Series Single Hung Sash Balancer Number 3540 Unit Number_3068 Screen measures 24-13/32" wide byAndersen 100 Series Sash Balance Number 3540 Works with Andersen 100 Series Single Hung Fibrex windows manufactured from 2008 to present. Every balancer has the number stamped on the edge please see in image gallery. We highly recommend replacing both balancers even if only one is not operating properly. These balancers allow free and easy vertical movement of the lower active single hung sash. To visibly see the balancer you need to remove the lower