Glossary of Terms

A-B        C-D        D-F        E-F        G-K        L-P        Q-S        T-W

The horizontal members of a window sash or door panel.

A sub frame component that surrounds a sealed unit. A sash can be either fixed (non-operating) or operating.

Wood wedges (often wood shingles) used to secure the window or door unit in the rough or masonry opening in a square, level and plumb position during and after installation.

A narrow fixed or operating window joined to the side of a door frame combination light and entryway.

Single Hung Window
An operating style of window, with fixed top panel and a lower sash that slides up vertically.

A window designed specially for roof installation, usually to provide natural light to interior building areas.

Vertical wood framing members which form a frame wall. In normal construction these are eight foot-long 2″ x 4″.

An operating style of window that has a sash which slides horizontally to open. Also known as a glider.

Solar Heat Gain Coefficient (SHGC)
The solar heat gain coefficient (SHGC) indicates the amount of solar gain through a pane of glass. It ranges from 0 to 100. The higher the number, the better the solar gain.

The strip of material that maintains uniform separation between the layers of glass in the sealed unit of the window.

Inside horizontal trim member of a window sash or door panel.

A window component that holds the sealed unit into a frame or sash.