Marks USA

Survivor High Security

Marks USA Survivor series locksets are offered in four lever styles, conventional cylinder, or IC core for "Best" size cores, Schlage® as well as others. Marks locksets feature a lifetime mechanical warranty. All functions are available in seven standard finishes, are UL Listed for 3-hour fire rating, and satisfy the requirements.
The HI-SECURITY™ Cylinders locking principle includes the combination of standard pin tumbler cylinder with a sidebar locking mechanism which corresponds to a "security wave" designated by unique shaped side pins which correspond to a factory milled groove on the key. The HI-SECURITY™ Cylinders are Bump, Pick and Drill resistant and can be supplied UL437 or Non-UL Optional. Information: call (631) 225-5400 or e-mail kathryn@marksusa.com.

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