Living room with window styles selected for light and ventilation

Window style

Transom Windows

A window positioned above a door or another window, commonly as a fixed daylight element and sometimes as an operable unit.

  • Compare complete window options
  • Clarify installation and finish scope
  • Review written proposals

Product view

See the transom windows itself

The isolated product view keeps the sash arrangement and operating geometry clear before the room-fit and installation questions begin.

How it operates

The short answer

Many transoms are fixed; operable configurations and hardware vary and may be difficult to reach.

Common uses

  • Daylight above doors
  • Architectural combinations above larger window units

Ventilation, view, and daylight

  • Only operable transoms provide ventilation; safe access to controls should be considered.
  • The elevated position can add daylight while preserving wall or door function below.

Cleaning and maintenance

  • Height and adjacent assemblies affect cleaning and service access.

Installation and performance considerations

  • Combined-unit support, flashing, trim, glass safety, and access require a documented scope.
  • Compare the complete combined assembly and applicable glass requirements.

Compare nearby choices

Style comparison

Picture Windows

Both may be fixed, but a transom is defined by its position above another opening or element.

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Sources

Sources
  1. Window Installation — U.S. Department of Energy
  2. Safety Standard for Architectural Glazing Materials — U.S. Consumer Product Safety Commission
  3. Window Energy Performance Ratings — National Fenestration Rating Council