what is afire cup ring

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The Schlage full size interchangeable core (FSIC) prepped B560F, B561F, and B563F deadbolts all require a UL fire cup (R) in order to be UL listed.  This fire cup is s...
1 1/8" mortise cylinders fit the 650 series keyswitch.  The 650 series keyswitch when ordered with the cylinder, will come complete with the correct cylinder, cam, and any required blocki...
If blocking rings (PN 36-079) are needed, specify dimensions when ordering. See below for blocking ring (PN 36-079) dimensions.  Blocking Ring  Specify Dimension  1//8" ...
The part number for a Schlage mortise cylinder blocking ring for use without compression ring is the 36-079 (specify dimension and finish).
Depending on the application, there are two types of blocking rings offered - One for use with a compression ring, and one for use without.  When a compression ring is used, it's diameter is l...
After selecting the correct blocking ring, specify the thickness.  The table below shows the different thicknesses that the rings are offered in.