To answer the challenge of security and life safety in classroom environments, Marks USA Custom Lockset Division developed the Loc-Down Classroom Intruder ANSI/BHMA F110 Function leverset with clutch design. The company incorporated all of the standard features of its Survivor Series locksets (clutch system, super strength retractor, long life lever support springs, and a life test of more than 1 million cycles) with the new Life Safety Classroom Intruder Function. Marks USA’s Loc-Down lockset locks down a classroom instantly at the first sign of trouble outside. In an emergency, faculty and students remain safely within the classroom, as the exterior lever is disabled by operating the interior lock cylinder with no need to open the door.

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