Andersen 20210 Lower Sash with White Exterior and Natural Pine Interior with Low-E4 Glass Color:Pine Interior / White Exterior Low E4 Glass is a

Low E4 Glass is a high performing glass that improves energy efficiency over standard dual pane glass

Andersen TW2636 (Lower Sash) White Exterior and Natural Pine Interior High Performance LowE4 Tempered Glass (1992 to May 2010) Works with 400 Series Tilt-Wash Double-Hung Windows manufactured from 1992 to May 24

Andersen TW2036 (Lower Sash) White Exterior and Natural Pine Interior High Performance LowE4 Finelight Glass (1992 to May 2010) Works with 400 Series Tilt-Wash Double-Hung Windows manufactured from 1992 to May 24

This screen measures 31-7/8" wide by 58-27/32" high

Andersen 20210 Lower Sash with White Exterior and Natural Pine Interior with Low-E4 Glass Color:Pine Interior / White Exterior Low E4 Glass is aAndersen 20210 Narroline Double Hung Lower Sash White Exterior with Natural Interior Works with Andersen Narroline Double Hung 1968 to 2012. This sash has a White Exterior with Natural Interior. This window sash has Low E Glass. Low E4 Glass is a high performing glass that improves energy efficiency over standard dual pane glass. It also adds fade protection and water spot reductions due to it's special coating. This sash features a patented Flexacron