ventlight, night vent, vent sash

In a window, a small operable light (pane) with hinges along its upper edge, so that it may be swung open to provide ventilation without opening the entire sash.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
The REG100L kit is needed for installation and includes a remote-mount inline fan, one ventlight fixture, a mounting bracket, and hardware.