The rim cylinder with thumbturn, XB11-979 (Figure 1) was designed to be installed on the inside head of the Von Duprin 98/99–2 double cylinder exit devices, see Figure 1. The rim cylinder with...
To convert the Von Duprin 98/99 Rim or Vertical (Rod or Cable) Exit Device with functional lever (996L-R/V) to act like a rigid lever (996L-NL-R/V) with key over ride follow these steps:
R...
2021 Update:
An updated version of this knowledge entry can be found by clicking HERE.
Part numbers for Schlage and Falcon cylinders for Von Duprin device...
FALCON
Mortise
Rim
KIL
Conventio...
If unclear whether mortise, rim, or key-in-lever is needed, reference links below to determine what cylinder type is needed.
In order to determine cylinder type n...