Works on PTH311 Series Lever Latch Installation and Euro Style Patch Locks EUR205, EUR680, and EUR681 Available in Several Finishes Available in Cylinder/Thumbturn and Cylinder/Cylinder These CRL Extended Length Cylinders work on a PTH311 Series Lever Latch installation, in conjunction with a PTH314 Glass Mounted Latch Keeper on an inswing door. Available keyed randomly or alike.