Insulated glazing

（重定向自Double glazed window）

A sectioned diagram of a fixed Insulated Glazed Unit (IGU), indicating the numbering convention used in this article. Surface #1 is facing outside, Surface #2 is the inside surface of the exterior pane, Surface #3 is the outside surface of the interior pane, and Surface #4 is the inside surface of interior pane. The window frame is labelled #5, a spacer is indicated as #6, seals are shown in red (#7), the internal reveal is on the right hand side (#8) and the exterior windowsill on the left (#9)

A typical installation of insulated glazing windows with uPVC window frames.

Examples of modern plastic and wooden window profiles with insulated glazing

Insulated glazing (IG), more commonly known as double glazing (or double-pane, and increasingly triple glazing/pane) is double or triple glass window panes separated by a vacuum or gas filled space to reduce heat transfer across a part of the building envelope.

单词	Double glazed window
释义	Double glazed window 英语百科 Insulated glazing （重定向自Double glazed window） Insulated glazing (IG), more commonly known as double glazing (or double-pane, and increasingly triple glazing/pane) is double or triple glass window panes separated by a vacuum or gas filled space to reduce heat transfer across a part of the building envelope.
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