mullion
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mullion
Also called: munnion
Standards
a vertical structural member that fits between two door curtains and generally contains door-curtain guiding devices. See Figure 4.2
mullions can be one of the following types:
- (a) Fixed
- (b) Lift out.
- (c) Hinged.
- (d) Slide aside.
Source - AS/NZS 4505:2012: Garage doors and other large access doors
Standards
a vertical bar dividing sections of a panel over a doorset within the doorframe other than the door leaf
Source - AS 1905.1:2015: Components for the protection of openings in fire-resistant walls
Standards
a vertical intermediate framing member of a window frame or opening that is jointed into the head and sill, and separates the lights
Source - AS 2047-2014: Windows and external glazed doors in buildings
HB50
intermediate vertical member in an opening or window frame, separating lights
See also: box mullion; transom; transom panel
See also: box mullion; transom; transom panel