Low E Glass

One of the newest innovations in energy efficient windows is Low
Emissivity, or Low E glass. This is glass which has an invisible
coating which reflects long wave heat radiation back into your
home (keeping heat in) while allowing short wave (solar) heat
radiation to enter. This helps reduce heating costs of your home
in winter. By not allowing heat to escape, the temperature of the
glass inside your home is kept warmer which reduces that cold
uncomfortable feeling near windows. Low E coatings are also
known to reduce harmful ultraviolet rays which cause fading of
interior finishes.

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