Retrofit lock set PG027T 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 PROTEC² is 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. Specifications Type of product Mechanical mortise lockset Platform ABLOY PROTEC2 Close Cylinder CY039TCylinder with thumbturn for solid doors. ABLOY PROTEC² lo… Cylinder CY031TCylinder with thumbturn for solid interior doors. ABLOY P… Cylinder CY038TInner cylinder for solid doors. ABLOY PROTEC² lock system.