What is the part number for the Schlage thumbturn rim cylinder?

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 thumbturn will lock or unlock the outside lever, thumb piece or knob trims.



Figure1: Modified rim cylinder with thumbturn applied


The XB11-979 is available from Schlage through normal ordering processes.


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