A master keyed lock is actually a lock that's built to be opened up by specific keys, but could also be opened using a master key. A Master Key System includes a hierarchy of keys along with a variety of cylinders or locks that let different or individual key holder gain access to any given parts of a building or buildings.

Master keys are also used by landlords or landladies in apartment complexes where they have a master key that could open a door in each flat, then occupants have their keys for their unit being rented. This particular key may also be used to open the building's main entrance door together with additional common areas within the apartment. However this key is not going to work on the lock of a different unit.

Master key systems also involve grand master and sub master keys. Master key is all you need if you must have an access to multiple doors without the hassle of asking each key holder to unlock the door for you.

We can make the proper master key systems depending on your key holder. When in an urgent locksmith emergency trouble, make sure to call our locksmiths at our emergency hotline number. Remember that you can easily reach us by phone 247.