Window & Door Terms - A
- Window & Door Terms - A
- Air Space Grill
- Metal strips placed between panes of glass to simulate individual panes. Usually measuring 1/2" or 5/8" wide. Sometimes referred to as internal grids or internal muntins.
- Apron
- Decorative trim nailed to the inside wall, located underneath the stool.
- Argon Gas
- An odorless, colorless, tasteless, non-toxic gaseous element injected in between glass panes of an insulated glass unit (as a purchase option). Argon gas is about 6 times heavier than air. Its density retards the infiltration of cold or warm temperatures into a home where the window is installed.
- Astragal
- A metal or wood extension (strip) positioned between the two panels of a double door. The astragal is attached to the side (stile) of the fixed panel and is often equipped with weather-stripping on the inside face where the active panel meets the extension. The astragal serves as a door stop for the active panel and as a weather seal.
- Atrium Door
- A brand name that has come to mean a 2 or 3-panel hinged door with only one panel that opens.
- Awning
- Window made with one sash which opens on a hinged/track mechanism. Sash is hinged on the left and right side.
