authorization for restricted keyway

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The 40-100 is a multiple tailpiece pack with a pre-assembled, 0-bitted, key-in-knob cylinder.  The kit includes the following: (1) Pre-assembled cylinder 0-bitted, less tailpiece 40-100 (...
The pack is available in all keyways, Everest and Classic families including restricted keyways except Primus. 
A PO from a distributor with a letter of authorization from the end user.
Schlage Everest B keyways are restricted SFIC keyways.
Part number 80-037 is the combinated Schlage Everest small format interchangeable core and is available in the restricted Everest B Family keyways. Part number 80-036 is an uncombinated version.
All of the Everest D sections/keyways are restricted.
HIGH SECURITY Primus/Primus XP: In addition to six cuts for standard locking mechanism, there are five side finger pins to operate the secondary sidebar lock. Primus keys will operate non-Primus l...