Operable transom

Operable transom

A pane of glass above a door, which may be opened for ventilation.

operable transom

A panel or glass light, above a door, which may be opened for ventilation.
References in periodicals archive ?
The wavy form of the walls, roofing and operable transom windows provides better aerodynamics on the coastline and enhances ventilation and natural lighting.
Or, you might use operable transom windows above bedroom doors to let a breeze into these rooms while still maintaining privacy.
Above all the doors are operable transom windows, again allowing for cross-ventilation and heat exchange, even if the doors are closed.
A system of ventilation shafts were uncovered, that were created to work in conjunction with a central atrium and operable transoms to induce air 'flow, and combined with the thermal dampening of this building's heavy mass made its system's extremely effective.
In the South, shuttered verandas, high ceilings, operable transoms, two-story porches and dogtrot houses with open breezeways down the center maximize both cross ventilation and shade to counter the humid heat.