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Air Infiltration
The amount of air leaking in and out of a building through cracks in walls, windows, and doors. |
Balance
A mechanical device, normally spring loaded, used in hung windows to counterbalance the width of the sash during opening and closing. |
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Apron
Inside flat trim member that is used under the stool at the bottom of a window. |
Bay Window
A combination of three or more windows consisting of central picture or fixed window and flanked by two flanking units at 30°, 45° or 90° angles to the wall. |
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Argon
A colorless, odorless, non-flammable, non-reactive, inert gas which acts as an insulator between the panes of glass in a sealed unit. |
Bow Window
A combination of four or more window units attached at an angle to give the impression of a curve. |
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Awning Window
An operating style of window with a sash hinged on the sides, and swings open at the bottom towards the exterior. |
Brick Mould
Outside casing around a window to cover jambs and through which nails are driven to install the window. |
