Andersen 18310 Lower Sash with White Exterior and White Interior with Low-E4 Glass Color:White Interior / White Exterior This sash has an visible

This sash has an visible glass size that measures 48" wide by 31-9/16" high

Andersen TW3046 (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

This screen measures 31-7/8" wide by 34-27/32" high

Andersen 28210 Narroline Double Hung Upper Sash Sandtone Exterior with Natural Interior Works with Andersen Narroline Double Hung 1968 to 2012

Andersen TW2832 (Lower 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 18310 Lower Sash with White Exterior and White Interior with Low-E4 Glass Color:White Interior / White Exterior This sash has an visibleAndersen 18310 Narroline Double Hung Lower 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