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For Von Duprin or Falcon mortise cylinder exit devices, does cylinder need to be longer on a thick door?

For Falcon and Von Duprin exit device trim requiring a mortise cylinder, the door thickness does not alter the cylinder dimension.  

For example a door with 1 3/4" door thickness and a door with 2 1/2" door thickness would both take a 1 1/4" mortise cylinder (assuming that the specified trim utilizes mortise cylinders and not rim cylinders.)


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