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double-glazed window
A type of window having two layers (panes or glazing) of glass separated
by an air space. Each layer of glass and surrounding air space reradiates
and traps some of the heat that passes through thereby increasing the window's
resistance to heat loss (see R-value).
In factory-made double glazing units, the air between the glass sheets is
thoroughly dried and the space is sealed airtight, eliminating possible
condensation and providing superior insulating properties.
Related category
• WINDOWS
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