Tubular deadbolt ME156T Used with the CY413 single cylinder with lockable thumbturn and the LC802 tubular deadbolt lock case. Operated from outside the door by a key and inside by the thumbturn. The thumbturn can be locked in place to provide double cylinder security. 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. Available with several different key systems and surface treatments. UL listed. Specifications Type of product Mechanical bored lockset Platform ABLOY PROTEC2 Close Cylinder CY402TRound ANSI cylinder. ABLOY PROTEC² lock system. Cylinder CY414TRound cylinder for rim locks. ABLOY PROTEC² lock system. Cylinder CY403TRound ANSI cylinder. ABLOY PROTEC² lock system.