To answer the challenge of security and life safety in today’s classroom environment, MARKS USA Custom Lockset Division has developed the Loc-Down™ Classroom Intruder ANSI/BHMA F110 Function Leverset ...
UPDATE 2/26/2025: This article, first published in 2020, has been updated by the author to include several developments within the industry that have made some of the previous information out-of-date.
Marks USA of Amityville, N.Y., a NAPCO Security Systems company, releases the Loc-Down classroom intruder ANSI/BHMA F110 function leverset with clutch design. It incorporates all of the standard ...
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