Resource Type: Glossary Term

A narrow bar that divides glass areas or creates the appearance of divided panes.

A structural or decorative member that separates two windows, doors, or glass units.

The bottom horizontal part of a window or door frame that can help shed water.

The top horizontal part of a window or door frame.

The vertical side parts of a window or door frame.

The surrounding structure that supports the sash and glass within the wall opening.

The part of a window that holds the glass and may move or remain fixed depending on window style.

A replacement piece or unit of glass cut or fabricated to fit an existing opening.

A service that addresses failed sealant or glazing around a window system; for failed insulated units, glass replacement may still be needed.

A loss of the airtight seal around an insulated glass unit, often causing fogging, moisture, or reduced performance.