Fortress Interlocks CL keys have over 200,000 unique lock combinations. For ease of use all Fortress locks provide key insertion in two directions.
Each different key combination is allocated with an engraved code onto the lock and key, of up to maximum 30 characters (3 lines of 10 characters).
This engraving is linked to a 7 coded differcode which is recoderder in a database for continuous cross reference.
Besides CL keys and locks, Fortress also offers a ML (masterable lock) range. The ML lock cilinder in this is made designed to accept a master key (MLK-SUCM).