Andersen 20310 Lower Sash with White Exterior and White Interior with Dual-Pane 5/8 Glass Unit Number_1852 This screen measures 39-7/8" wide

This screen measures 39-7/8" wide by 38-27/32" high

This sash has an unobstructed glass size of 21-1/2" wide by 22-11/16" High

Kit includes operator

Andersen TW3432 (Lower Sash) Sandtone 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 20310 Lower Sash with White Exterior and White Interior with Dual-Pane 5/8 Glass Unit Number_1852 This screen measures 39-7/8" wideAndersen 20310 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 Dual Pane 5 8 Glass. 5 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