von duprin force

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The 5 pound force requirement is in reference to the maximum force to swing the door, not the maximum force allowed to unlatch the exit device.  Maximum allowed force to retract the Von D...
Calibration is an internal process of the QEL device when energized the 1st time.  The solenoid will pull and drop 3 times on a standard calibration.  Calibration can be forced by pr...
  Power Boost is a positive latching feature that increases the latch force, to over come building stack pressure or door weather stripping, etc, if the door stops before co...
The older model Senior Swing came with 2 spring options. The "standard force" spring required 15 lbs of manual  opening force, and reduced force "RF" required 11 lbs of manual opening force.  All S...
The SEM series magnets have a holding force of approximately 35 lbs when installed according to LCN instructions.
The Senior Swing Series used to have a 2 gearbox options, a "standard force" (15 lbs) and a "RF - reduced force" (11 lbs). In November 2009 RF option was eliminated and we made the standard gearbox...
The Schlage Vandlgard option available on select L-Series, LV-Series, and ND-Series and is ideal for areas subject to abuse or anywhere vandalism is likely to be present, such as schools, univ...
Vandlgard is specified by "LV" for mortise locks. The L9000 is a mortise style lock that mounts into a pocket mortised into the edge of the door.Vandlgard is specified by ND9x functions f...