Air Chambers - Small honeycomb spaces within the sash and frame which help to insulate and strengthen to a window.
Air Infiltration - The amount of air that passes between a window sash and frame. It is measured in terms of cubic feet or air per minute, per square foot of area. The lower the number, the less air passes through.
Architectural Shapes ? Specially designed windows such as rectangles, triangles, trapezoid, octagons, pentagons, etc., or Radius Geometrics which include half-rounds, quarter-rounds, full-rounds, sectors, ellipses, eyebrows, etc. (See Geometric Shapes)
Argon Gas - An odorless, colorless, non-toxic gas which is six times denser than air. It is used to replace air between the glass panes to reduce temperature transfer.
Astragal ? An interior molding attached to one of a pair of doors or sash in order to prevent swinging through; also used with sliding doors to insure tighter fitting where the doors meet.
- Flat astragal ? A non-rabbeted astragal applied to swing doors; the astragal is applied to the face of the meeting stile of in of the doors.
- Sliding astragal ? An astragal to cover the meeting joint of the sliding door.
- T-astragal ? An astragal, T-like in shape, which is rabbeted to the approximate thickness of the swinging door.
Awning Window - A window that is top-hinged and swings outward for ventilation. |
