Thumb turn can be unlocked and taken with you, to convert to double cylinder lock. Caution: double cylinder function should only be used when the
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312-929-2230 Locks Chicago Nonstop Locksmith carries a wide
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Economical and cost effective when high security is needed. Fits doors from 1-3/8 inch(35mm) to 1-3/4 inch (45mm). 3 Mul-T-Lock junior keys ( 008
Mul-T-Lock Cronus High Security Grade 2 Double Cylinder Dead-Bolt 2-3/8 or 2-3/4 Adjustable Backset …See more Mul-T-Lock Cronus High Security Grade 2