Cylinder length door thickness

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Question
Answer
A 1 1/4" mortise cylinder with straight cam (similar to the Schlage B502-191) or a 1 1/2" mortise cylinder with straight cam using supplied spacer collar. Cylinder length does not chan...
Standard Schlage rim cylinders will fit a total thickness of door and projecting trim of 3 inches, this includes a minimum of 3/8" of engagement of the tailpiece into the exit device.  See ima...
For total thickness measurements larger than 3 inches see the special cylinder offerings in Pricebook.  Specify the part number and include the total thickness.  We do not offer the ...
Yes, the "fastening" screw that mounts under the exit device will accomodate a door thickness up to 2 1/4" thick. 
A 4040 closer mounted with thru bolts on a 2-3/4" thick door would require 1/4-20 X 3-1/2" machine screws.
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...
Typically for a 1-3/4" door you would use a 1-1/4" cylinder.  Use the Table in the Pricebook for a reference: