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Interchangeable Core Cylinders
Interchangeable Core Cylinders are frequently used in larger institutions and businesses and are known for their easy ability to re-key the lock by swapping out the core without taking the lock apart.

I/C Locks have two types of keys that work in the lock, the standard operator key locks and unlocks the lock like normal while the control key, when used, pulls the entire core of the lock out without removing any screws. This is very useful when upgrading locks as the door hardware can be left alone and just the lock cores are replaced with new ones and doors can be upgraded in seconds. The most popular I/C Lock brands are Best, Yale, and Schlage with their figure-eight style cores are well known in the world and found many places. There are different IC lock formats with the two most popular being Small Format Interchangable Core (SFIC) and Large Format Interchangeable Core (LFIC).

 

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