Andersen 100 Series Single Hung Sash Balancer Number 3520 Unit Number_30310 Andersen A335V Awning Sash with

Andersen A335V Awning Sash with Low-E4 Glass in Terratone Color Works with Perma-Shield Casement Windows manufactured from 1966 to Present

Andersen PS68/FWG68 Operating Panel Right Jamb Weatherstrip (Outside) in White Color

Andersen G64 400 Series Gliding Window (Passive Sash) in Sandtone

Andersen 30310 Conversion Kit for Narroline Windows - White Exterior & Natural Pine Interior

Andersen TW20510 (Upper Sash) White Exterior and White Interior High Performance LowE4 Glass (1992 to May 2010) Works with 400 Series Tilt-Wash Double-Hung Windows manufactured from 1992 to May 24

Andersen 100 Series Single Hung Sash Balancer Number 3520 Unit Number_30310 Andersen A335V Awning Sash withAndersen 100 Series Sash Balance Number 3520 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