Astragal
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astragal
[′as·trə·gəl] (building construction)
A small convex molding decorated with a string of beads or bead-and-reel shapes.
A plain bead molding.
A member, or combination of members, fixed to one of a pair of doors or casement windows to cover the joint between the meeting stiles and to close the clearance gap.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
Astragal
A member or combination of members, fixed to one of a pair of doors or casement windows to cover the joint between the meeting stiles and to close the gap in order to prevent drafts, passage of light, air or noise.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
astragal
An overlapping astragal, 3
astragal, 1: in Greek architecture
1. A bead, usually half-round, with a fillet on one or both sides. It may be plain, but the term is more correctly used to describe the classical molding consisting of a small convex molding decorated with a string of beads or bead-and-reel shapes.
3. A member, or combination of members, fixed to one of a pair of doors or casement windows to cover the joint between the meeting stiles and to close the clearance gap; provides a weather seal, minimizes the passage of light and noise, and retards the passage of smoke or flame during a fire. Also see overlapping astragal, split astragal.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.