The latest ABLOY PROTEC 2 key system, the CY436T key-in-knob cylinder, has the UL Mark. The UL 437 security rating is regarded as a standard of safety for key locks. Products designated with the UL Listed Mark are considered to have representing samples that have been evaluated by UL and meet applicable safety standards. Joining the ABLOY Protec 2 family of ANSI North American cylinders puts the CY436T in good company. ABLOY’s patented rotating disc technology offers simple and reliable functionality, even in extreme environments. Designed to retrofit cylindrical locksets, padlocks and deadbolts, it features the durability of brass construction and can be operated with just a single key.