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Glazing

The glass in a window, and the work of installing it.

Glazing is the glass itself. Single glazing is one layer of glass; double and triple glazing are sealed units of two or three layers with gas or air between them for insulation.

Glazing also names the act of setting glass into a sash, which is why the putty that holds a pane in an old sash is called glazing compound.

Double-hung window in vertical section, outside at left

Hover or tap a part to see what it is called.

Double-hung window, in section

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