A B C D E F G H I J K L M N O P R S T U V W Show All
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- AAMA
- American Architectural Manufacturers Association. A national trade association that establishes voluntary standards for the window, door, storefront, curtain wall, and skylight industries.
- Absorptance
- The ratio of radiant energy absorbed to total incident radiant energy in a glazing system.
- Acrylic
- A thermoplastic with good weather resistance, shatter resistance, and optical clarity, used for glazing.
- Aerogel
- A microporous, transparent silicate foam used as a glazing cavity fill material, offering possible U-values below 0.10 BTU/(h-sq ft-°F) or 0.56 W/(sq m-°C).
- Air infiltration
- The amount of air leaking in and out of a building through cracks in walls, windows and doors.
- Air-leakage (air infiltration)
- The amount of air leaking in and out of a building through cracks in walls, windows, and doors.
- Air-leakage rating
- A measure of the rate of air-leakage around a window, door, or skylight in the presence of a specific pressure difference. It is expressed in units of cubic feet per minute per square foot of frame area (cfm/sq ft). Formerly expressed as cubic feet per minute per foot of window perimeter length (cfm/ft) but not now in use. The lower a window's air-leakage rating, the better its airtightness.
- Airspace
- The space in the cavity between two panes of glass in an insulated glass unit.
- Aluminum-clad window
- Window with wood construction covered with aluminum sheet. Has a factory-applied finish to deter the elements.
- Annealed glass
- Standard sheet of float glass which has not been heat-treated.
- Annealing
- Heating above the critical or recrystallization temperature, then controlled cooling of metal, glass, or other materials to eliminate the effects of cold-working, relieve internal stresses, or improve strength, ductility, or other properties.
- ANSI
- American National Standards Institute. Clearing house for all types of standards and specifications.
- Argon
- An inert, nontoxic gas used in insulating glass units to reduce heat transfer.
- ASHRAE
- American Society of Heating, Refrigerating and Air Conditioning Engineers.
- ASTM
- American Society for Testing and Materials. Organization that sets standards for testing of materials.
- Awning
- Window similar to a casement except the sash is hinged at the top and always swings out.
