MULTI-POINT LOCK MECHANISMS
Mechanisms that latch the door at several points along the length of the door instead of a single point in close proximity to the handle. Multi-point locks are provided with the French doors made by most of the major window manufacturers. Due to the variety of multi-point sets available, it is recommended that a copy of the existing lock trim or a factory drawing be available so the trim can be machined correctly to match the lock in the door.

SPRING LATCH A latching mechanism operated by the handles.

CYLINDERS are the portion of a lock where the key is inserted to lock or unlock the set. There are several different kinds common to entry sets:

MORTISE CYLINDERS Mechanisms that are threaded into mortise locks secured by a set screw through the edge of the lock and vary in length for different door thicknesses.

RIM CYLINDERS Mechanisms used in dead bolts and are mounted with screws from the opposite side of the door. They do not vary in length, but the mounting screw and tailpiece length varies according to the door thickness.

AMERICAN or U.S. CYLINDERS Refers to the type of cylinder used with several types of multi-point lock sets. These cylinders are attached to the escutcheon and do not vary in length, but the tailpiece length varies according to the door thickness.

EUROPEAN PROFILE CYLINDERS The other type of cylinder used with multipoint lock sets. These cylinders slip through the exterior escutcheon, the door and the interior escutcheon and are held in place by a set screw through the edge of the lock and vary in length for different door thicknesses.