Double Cylinder Locks: Design And Function | GV Lock
October 25, 2019 Category: Locks & KeysAuthor: Chris Strauss Double-Cylinder Locks: Design and Function For commercial buildings and certain residential applications, double-cylinder locks and deadbolts offer an additional level of security. This type of lock has two cylinders and requires a key for locking and unlocking the door from the outside or inside. Unlike a […]
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