co levers compatible

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ND locks shipping on or after January 30, 2017 no longer require the use of the soft durometer spacer. Lever installation on the redesigned ND locks should not be difficult.
For ND locks shipping prior to January 30, 2017, the addition of the soft durometer spacer (SDS) on August 15, 2012 did affect the installation of the lever.  Ultimately, removing th...
- AD Series and CO series products require that the Night Latch (NL) screw is installed in the exit device.  Be sure this screw is installed- Exit hardware and strike must be properly mounted ...
As of June 2019, all ND, NDe, AD CYL and CO CYL levers are the same.
Between January 30, 2017  June of 2019, the AD and CO cylindrical lock levers were incompatible because of the ND / NDe lever and spring cage design change in January of 2017.Prior to January ...
Installers have reported that their AD-CO Series cylindrical or mortise locks will unlock whenever the outside lever is lifted.    This will occur if the outside spindle (square post) is install...