Door mullion

Door mullion

The center vertical member of a double-door opening set between two single active leaves, usually the strike side of each leaf.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

door mullion

The center vertical member of a double-door opening, set between two single active leaves; usually forms the strike side of each leaf; may be removable. also see mullion.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
The ROPS posts and reshaped cab doors have been repositioned, eliminating the windshield door mullion found on previous models.
This ultra small reader is designed to mount on standard door mullions and is easy to integrate with any type of security system.