Use and Care Manual

GLOSSARY OF TERMS

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Light: A single pane of glass within a window or patio door. Also refers to

each visible section of glass created by a grille or muntin.

Mortise: A recess or slot cut into a board that receives the projecting portion

(tenon) of another member in order to form a joint.

Muntin: A short bar, used to separate glass in a sash into multiple lights.

Also called a windowpane divider or a grille.

Panel: The component of a patio door that holds the glass pane.

Pivot: The point at which a window sash turns; usually in the center of

venting windows.

Protective film: Low-density plastic film that is applied to the interior and

exterior glass surfaces. This film protects units during manufacturing, delivery

and construction.

Rough opening: The space in a wall in which a window or door is installed.

Sash: The framework holding the glass in a window unit. Composed of

stiles (sides) and rails (top and bottom).

Silicone bead: A small strip of sealant that is applied to the full perimeter of the

exterior of the glass surface where the sash/panel meets the glass. It adds

protection and creates a finished look.

Sill: The horizontal member that forms the bottom of a window or door frame.

Stop: A wood trim member nailed to the window or door frame to hold, position

or separate its parts.

Tempered glass: Glass manufactured to withstand greater than normal forces on

its heat-treated surface. When tempered glass breaks, it shatters into small pieces

to reduce the danger of glass cuts.

Tenon: A rectangular projection cut out of a piece of wood for insertion into a mortise.

Transom: A smaller window above a door or another window. A transom joint is

the horizontal joining area between two window units that are stacked one on top

of the other.

Vapor barrier: A watertight material used to keep moisture away from structural

elements such as floors, walls and ceilings.

Venting unit: A window or door that opens or operates.

Weatherstripping: Metal, plastic, foam or felt strips used to create a seal between

a window sash or door panel and the frame to prevent weather infiltration.