Andersen AN4 Awning Sash with Low-E4 Glass in White Color Unit Number_3056 This screen measures 21-5/16" wide

This screen measures 21-5/16" wide by 30-1/2" high

This sash has an unobstructed glass size of 15 inches wide by 17 15/16 inches high

Andersen CXW45 Casement Sash - High-Performance Low-E4 Glass - White Color

This kit fits a window with a visible glass size (lower sash) of 28-7/16" wide by 35-15/16" high

Andersen 244DH1860 200 Series Double Hung Lower Sash with White Exterior and Natural Pine Interior with Low-E High Performance Glass

Andersen AN4 Awning Sash with Low-E4 Glass in White Color Unit Number_3056 This screen measures 21-5/16" wideAndersen AN4 Awning Sash with Low E4 Glass in White 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 will stay cleaner.