- Three Thickness to Fit Cylinders or Thumbturns
- Works With All Standard 1-5/32" (29.4 mm) Diameter Mortise Cylinders
- Available in up to Five Finishes
CRL Straight Cylinder Rings are used to obtain the proper cylinder depth so the locking cam and the lock mechanism align. These Rings can be used with any CRL Mortise or Rim Type Cylinder, Thumbturn or Dummy Cylinder. They will also work with any other manufacturer's standard 1-5/32 inch (29.4 millimeter) mortise cylinder.