Low E (Emissivity) Glass is
glass with a transparent metallic oxide coating applied onto or into
a glass surface. The coating allows short-wave energy to pass
through but blocks up to 84% of UV rays that can fade your carpets,
drapes and furniture.
Argon Gas is an odorless,
colorless, tasteless, non-toxic gas that is six times more dense
than air. It is used to replace air between the glass panes to
reduce temperature transfer and to keep cold air out in the winter
and warm out in the summer.