Andersen AW5 Awning Sash with Low-E4 Glass in Terratone Color Category_55-1\16 Inches The Fibrex basement window has

The Fibrex basement window has double pane glass with a Low-E coating

Andersen 244DH2860 200 Series Double Hung Lower Sash with Sandtone Exterior and Natural Pine Interior with Low-E High Performance Glass

Andersen TW38310 (Lower Sash) White 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

This sash has an unobstructed glass size of 19 inches wide by 33 15/16 inches high

Andersen TW2442 (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

Andersen AW5 Awning Sash with Low-E4 Glass in Terratone Color Category_55-1\16 Inches The Fibrex basement window hasAndersen AW5 Awning Sash with Low E4 Glass in Terratone 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