Double-pane windows contain two glass panels that can be separated by a spacer and:
Answer Argon or krypton gas
Double-pane windows are separated by a spacer filled with a moisture absorbing desiccant and may also be separated by vacuum, ambient air, or rare gasses. Argon and krypton gasses help increase the thermal efficiency of an insulated glass unit.
Asked by Tony Conrad · Last updated 5 months ago · 226.5K views