Von Duprin SD Installation

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SD option is available and is also standard with Von Duprin 98/99 rim and vertical rod exit devices but not available with mortise device.
 A 1 1/4" cylinder with straight cam is required for the Von Duprin SD (Special Dogging) exit device option.
The cylinder cam must be inverted with the SD option to work properly.
SD is Special cylinder dogging in the center case of 98/99 rim and vertical rod non fire rated devices and is available with standard, EL, QEL, CX and ALK.
ND locks shipping on or after January 30, 2017 no longer require the use of the soft durometer spacer. Lever installation on the redesigned ND locks should not be difficult.
For ND locks shipping prior to January 30, 2017, the addition of the soft durometer spacer (SDS) on August 15, 2012 did affect the installation of the lever.  Ultimately, removing th...
This option is not available as the solenoid is in the mechanism case where the dogging components would go.  An HD-EL solenoid is not available, and Special Dogging(SD) is not an option ...