TBSK CYLINDER TYPE

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TBSK means "touch bar switch kit" with active push bar. It is the same as RX330/RX350 push bar. This device is used to release maglock when the opening isn't required to have positive latch. 
The Von Duprin 370 series control required a 1 1/4" mortise cylinder and will not operate with 1 1/8" mortise cylinder.
Chexit devices shipped after 8-24-2015 with motor driven: The Chexit device will use a 1 1/4" mortise cylinder with straight cam. Schlage cylinder 20-001-114 recommended. CAUTION: The length of t...
Chexit devices shipped prior to 8-24-2015:The CX device will need a 1 1/4" mortise cylinder with a straight cam per page 2 of the installation instructions. A 996L-M for a 1 3/4...
The full size interchangeable cores or FSIC from Schlage.
The standard cylinder keyway that comes with the 914KIL trim is a Schlage 6 pin "C" section.