everest 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.
Split key systems are delivered in the highest level section on the key tip (insert): L - obverse or classic Y - reverse 0000 - Paracentric ZZZZ - Quad D000 - restricted Everest C000 - open...
Schlage Everest 29 is a new keyway family that launched in August 2012 and is patented until 2029. It offers the highest level of restricted key system security by Schlage through patent protection...