A transom window is a small window placed above a door or another window, usually to bring in more light and sometimes air. It’s often used as both a practical feature and a decorative architectural detail.

Quick Scoop

  • Location: Above a door or window.
  • Main purpose: Adds natural light, and in some designs, ventilation.
  • Common look: Fixed, rectangular, arched, or decorative glass.
  • Why people like it: It can make an entryway feel taller, brighter, and more polished.

Simple example

If you’ve ever seen a front door with a narrow glass panel above it, that’s a transom window. It helps daylight reach deeper into the room without needing a bigger door opening.

If you want, I can also show you a labeled diagram or explain the difference between a transom window , sidelight , and mullion.