Andersen G33 400 Series Gliding Window (Active Sash) in White Color:Pine Interior / White Exterior The Fibrex basement window has

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

Andersen CW5 Casement Sash - High-Performance Low-E4 Glass and Finelight Grilles - Sandtone Color

Andersen TW3042 (Lower Sash) White Exterior and White 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 TW28410 (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 TW28310 (Upper Sash) White Exterior and White Interior High Performance LowE4 Tempered Glass (1992 to May 2010) Works with 400 Series Tilt-Wash Double-Hung Windows manufactured from 1992 to May 24

Andersen G33 400 Series Gliding Window (Active Sash) in White Color:Pine Interior / White Exterior The Fibrex basement window hasAndersen G33 400 Series Gliding Window (Active Sash) in White Works with 400 Series Gliding Windows manufactured from 1991 to Present. White exterior color and natural wood interior. This new High Performance Low E4 glass replaces previous versions of Low E glass. Low E4 glass showed up to 25% in saving on cooling bills and 10% on heating bills over ordinary dual pane glass. This new glass reduces water spots up to 99% Glass will stay cleaner. 20 year