Von Duprin Removable Mullion

Von Duprin removable steel mullions provide single door performance in double door openings with rim devices.

Mullions are easily removed by loosening bottom set screw and removing top fitting cover. The top mullion fitting is attached to the frame and is concealed by the fitting cover.

Keyed removable steel mullions makes removal faster and easier by a single operation of the mortise cylinder. Once mullion is removed, large equipment or furniture can freely pass through the opening. The unit will self lock when re-installed, without use of the cylinder key.

Von Duprin auxiliary hardware meets or exceeds domestic and international quality standards; all exit devices are UL listed for panic or fire hardware and are ANSI certified.

Designs
Specifications
Options
Downloads

Keyed removable mullion

Uses 1-1/4" mortise cylinder with straight cam; sold separately

Steel or aluminum

Sizes from 7'2" up to 10'5"

Specify finish

Removable mullion

Steel or aluminum

Sizes from 7'2" up to 10'5"

Specify finish

Von Duprin Removable Mullion Specifications

Steel Mullions

2" (51mm) wide and 3" (76mm) deep, with a wall thickness of 1/8" (3mm)
Shipped with mounting screws and prepared for strikes (strikes not included except where indicated)
Available in SP28 and SP313 finishes; consult Penner for other factory powder coat finish options

Aluminum Mullions

11/16" (27mm) wide on face closest to the door and 23/8" (60mm) at the widest point
Depth is 31/8" (79mm) with a wall thickness of 1/8" (3mm)
Available in US4, US10, US28, 313 and 315 finishes; consult Penner for other factory powder coat finish options

Stock Hollow Metal Applications for devices mounted to cover ANSI 161 cutouts are higher than the standard mullion strike location. Consult Penner for special strike preparation or order a blank mullion.

Blank Mullions are furnished without strike preparation. They are used to mount devices at a strike height different from the standard mullion preparation.