Andersen CN3 Casement Sash with Low-E4 Glass in White Color Color:White This screen measures 33-3/4" wide

This screen measures 33-3/4" wide by 33-3/8" high

or 7191 stamped on the back of the operator

Andersen TW21042 (Lower 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

Fits on the bottom rail of the Flexivent sash and provides a seal between the sash and the sill

Andersen AN4 Awning Sash with Low-E4 Glass in Sandtone Color Works with Perma-Shield Casement Windows manufactured from 1966 to Present

Andersen CN3 Casement Sash with Low-E4 Glass in White Color Color:White This screen measures 33-3/4" wideAndersen CN3 Casement Sash High Performance Low E4 Glass 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