what cylinders are not modular?

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The following list of cylinders were not affected by the change to modular cylinder:    09-900, 09-904, 09-905, 09-907 mortise cylinder turnsSmall format interchangeab...
We have completed our transition to the modular design and no longer have the old design.
The cams for modular cylinders are unique and are not compatible with any non-modular mortise cylinders, Schlage or any competitors.
The Schlage L-Series uses a clover leaf cam with the exception of the L9060 outside cylinder which uses a straight cam. The cam part number will depend on the type of mortise cylinder, keyway (for ...
See descriptions for the 09-992 thru 09-997 parts kits for modular mortise cylinders.  The 09-998 is a kit for a rim cylinder.      
A modular cylinder's length is determined by 4 basic parts; a cam screw, cam, plug extension, and a back housing.  Most of these parts are used in more than one cylinder length and...
Modular cylinder was launched July 26, 2010 and replaced the standard key-in-lever, mortise, and rim cylinders.     For a list of cylinders not affected by the modular cylinder design change cli...
Effective July, 2014, there is no longer a specific modular cam part number for dogging. The Schlage modular straight cams come with two mouting holes that allow for the cams to be mounted inverted...
There have been a few reported cases of the torx cam screw loosening on modular designs shipped prior to April 16th 2013.   History of cam screw changes: Standard screw shipped July 27t...