Transom

Definition

A transom is a horizontal framing member spanning between vertical mullions.

Purpose

The purpose of a transom is to provide structural support and separation between different sections of a window, door, or other architectural elements, enhancing stability and design flexibility.

Examples of Use

1. Windows: Transoms are used above windows to provide additional natural light and ventilation.
2. Doors: Transoms above doors add architectural interest and allow light to pass through while maintaining privacy.
3. Storefronts: In commercial buildings, transoms create visual separation and support for large glass panels.

Related Terms

• Mullion: A vertical framing member between adjacent window or door units.
• Lintel: A horizontal structural member above an opening, providing support to the wall above.
• Sidelight: A vertical window positioned alongside a door or another window.

Notes

• Design: Transoms can be purely functional or decorative, depending on the architectural style.
• Materials: Common materials for transoms include wood, metal, and composite materials.