Andersen 20310 Upper Sash with White Exterior and White Interior with Dual-Pane 3/8 Glass Color:White Interior / White Exterior The conversion kit consists of

The conversion kit consists of two sash with New High-Performance Low-E4 glass

If you replace one balancer you should replace both balancers

This kit fits a window with a visible glass size (lower sash) of 20-7/16" wide by 35-15/16" high

This unit takes the place of a screen measuring 35-7/8" wide by 66-27-32" high

Andersen 3852 Narroline Double Hung Lower Sash Sandtone Exterior with Natural Interior Works with Andersen Narroline Double Hung 1968 to 2012

Andersen 20310 Upper Sash with White Exterior and White Interior with Dual-Pane 3/8 Glass Color:White Interior / White Exterior The conversion kit consists ofAndersen 20310 Narroline Double Hung Upper Sash White Exterior with White Interior Works with Andersen Narroline Double Hung 1968 to 2012. This sash has a White Exterior with White Interior. This window sash has Dual Pane 3 8 Glass. 3 8 dual pane glass offers standard thermal performance with great visibility. This sash features a patented Flexacron finish. This three step process ensures the best protection against weather and scratches. Flexacron is