Lock cylinder keying arrangement guide

Master Key Suites – MK

In Master Key Suites a group of cylinders each equipped with an individual key is also operated by one special key known as the Master Key. Keyed Alike groups can also be incorporated into any master key suite.


Keyed Alike Suites – KA

In Keyed Alike Suites all the cylinders are operated by the same key.


Keyed to Differ – KTD

In standard cylinder supply all the keys will be different. This is known as Keyed to Differ.


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