Andersen CXW55 Casement Sash with Low-E4 Glass in Forest Green Color Unit Number_CW4 Andersen TW2042 (Upper Sash) Forest

Andersen TW2042 (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 244DH3050 200 Series Double Hung Lower Sash with Sandtone Exterior and Natural Pine Interior with Low-E High Performance Glass

This sash has new High-Performance Low-E4 glass and replaces previous versions of Low-E glass

This sash has an unobstructed glass size of 31 inches wide by 33 15/16 inches high

Andersen CXW55 Casement Sash with Low-E4 Glass in Forest Green Color Unit Number_CW4 Andersen TW2042 (Upper Sash) ForestAndersen CXW55 Casement Sash High Performance Low E4 Glass Forest Green Color Works with Perma Shield Casement Windows manufactured from 1966 to Present. New High Performance Low E4 glass replaces previous versions of Low E glass. Low E4 glass showed up to 25% in savings on cooling bills and 10% on heating bills over ordinary dual pane glass. Protects interior from UV rays that causes material fading. This new glass reduces water spots up to 99% Glass