Andersen 100 Series Single Hung Sash Balancer Number 1040 Category_25-11\16 Inch Visible Glass Size Note: For the upper sash

Note: For the upper sash on this cottage style unit use a 3846 grille

Works with Perma-Shield Narroline double-hung windows manufactured from 1968 to 2012

Overall grille dimension is 29 7/32" wide by 24 7/32" high

Andersen TW2452 (Upper Sash) White Exterior and White Interior High Performance LowE4 Sun Glass (1992 to May 2010) Works with 400 Series Tilt-Wash Double-Hung Windows manufactured from 1992 to May 24

Andersen Auxiliary Security Lock with Screws - Oil Rubbed Bronze Finish

Andersen 100 Series Single Hung Sash Balancer Number 1040 Category_25-11\16 Inch Visible Glass Size Note: For the upper sashAndersen 100 Series Sash Balance Number 1040 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