Use and Care Manual

Jamb: The main vertical members forming the sides of a window or door frame.
Jamb liner: Metal, plastic or wood covering the inside surface and head jambs of
sliding windows.
Keeper: The protruding, hook-shaped part of a casement or awning window lock,
which is mounted on the sash.
Lift: A handle or grip installed on the bottom rail of the lower sash of a
double-hung window to make it easier to raise or lower the sash.
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.
Operator: A metal arm and gear that allows for easy operation of closing of
projecting windows such as casement, awning and roof windows.
Pivot: A mode of operation for venting windows which generally means the sash
pivots on a central axis and turns 90 degrees or more.
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.
Sash: The framework holding the glass in a window unit. Composed of stiles (sides)
and rails (top and bottom).
Shoe: A piece of venting window hardware that connects the sash to the
operator arm.
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 frame.
Stop: A wood trim member nailed to the window frame to hold, position or separate
window parts. Often an interior cosmetic component, the stop is often moulded into
the jamb liners on sliding windows.
Tempered glass: Glass manufactured to withstand greater than normal forces on its
heat-treated surface. When it breaks, it shatters into small pieces to reduce hazard.
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 also
the horizontal joining area between two window units that are stacked one on top
of the other.
Vapor barrier: A watertight material used to prevent the passage of moisture into
or through structural elements (floors, walls, ceilings).
Venting unit: A window or door unit that opens or operates.
Weatherstripping: Metal, plastic, foam or felt strips designed to create a seal
between a window sash and frame or stops to prevent weather infiltration.
Wing blade fastener: A small metal device that secures an insect screen or
combination screen/storm panel into the window frame. Usually located on the
sides of the insect screen or panel frame.
GLOSSARY OF TERMS
(CONTINUED)
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