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Design Dictionary

Transom

Look up and you'll see how transom windows are a useful design element that can also help with ventilation

Houzz
HouzzJanuary 11, 1970
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A transom is a window placed above the horizontal top frame of a door or window. Historically, when ceilings were higher and heating and cooling systems were more rudimentary, transom windows were an integral part of a home's ventilation. They're mostly decorative now and often fixed in place, although they can be installed so they will open with a casement hinge.
Hoedemaker Pfeiffer
A room with tall ceilings can easily handle an oversize transom window, which will let in light and keep the open feel of the room.
Logan's Hammer Building & Renovation
A leaded glass transom window is a traditional and decorative touch above this wide opening.
Whitten Architects
Casement hinges allow these transom windows to open for ventilation.
Lennar Utah
A transom window with beaded glass sits atop an open doorway.
Webber + Studio, Architects
These fixed transom windows are highly decorative but won't open.
Abelow Sherman Architects LLC
A stained glass transom window lines up visually with the frieze above the adjoining doorway for a balanced look.
Gaulhofer Windows
Because these windows are separated by a header and not the window frame, they would be called clerestory, not transom, windows.

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