Lock set for a door with a pre existing 4190 lock case. Includes the LC4190 lock case, CY001 cylinder and thumbturn, 4/029 interior handle and exterior plate with a finger pull handle, and 3 keys. Available with several different key systems and surface treatments. This product has ABLOY PROTEC²-lock system. ABLOY PROTEC²is a factory level locking solution. Every key is carefully controlled and is only made at Abloy Oy's factory. The keys have a patented sliding element that increases key security. One key fits several locks. How many locks a single key opens and who has access to what, can be accurately controlled.