Single-Hung/Double Hung
In double-hung units, both sashes slide vertically. Only the bottom sash slides upward in a single-hung window. Ventilation area can vary from a small crack to an opening of one-half the total glass area. Screens are placed on the exterior of the window unit.
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Casement
Casement windows are hinged at the sides. Casement windows project outward, providing significantly better ventilation than sliders of equal size. Because the sash protrudes from the plane of the wall, it can be controlled to catch passing breezes, but screens must be placed on the interior side. |
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Awning
Awning windows are hinged at the top and open outward. Screens are placed on the interior of the window unit. |
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Bay Window
A bay window is made up of three windows. The side or flanker units project out from the building in 30 or 45 degree angles. The center is parallel with the building wall. All the units can be stationary, operating, or any combination thereof. |
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Bow Window
A series of four or more adjoining window units, commonly five in number, installed on a radius from the wall of the building. |
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Fixed Frame or Picture Window
Refers to windows that are non-venting or inoperable. |
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Slider
Both sashes slide horizontally in a double-sliding window. Ventilation area can vary from a small crack to an opening of one-half the total glass area. Screens are placed on the exterior of the window unit. A "tilt" option makes cleaning easier and allows for more air flow. |
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