Andersen 20210 Upper Sash with White Exterior and White Interior with Low-E4 Glass Unit Number_A55 Andersen TW28310 (Upper Sash) Forest

Andersen TW28310 (Upper Sash) Forest Green Exterior and Natural Pine 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 38210 Narroline Double Hung Lower Sash White Exterior with White Interior Works with Andersen Narroline Double Hung 1968 to 2012

Andersen 244DH1856 200 Series Double Hung Upper Sash with White Exterior and Natural Pine Interior with Low-E High Performance Glass

Sold as a pair (one left and one right)

Andersen 20210 Upper Sash with White Exterior and White Interior with Low-E4 Glass Unit Number_A55 Andersen TW28310 (Upper Sash) ForestAndersen 20210 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 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