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| #403/1409 |
| Term | Definition |
| duplex | n. an early trade name used by Yale for locks which offer the functionality of master keying by incorporating two cylinders on the same side of the door, or two keyways in a lever tumbler lock. One keyway is for the change key and the other keyway is for the 'master key'. |
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Glossary contents Copyright 1989, 1990, 1995, 1996, 1997, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Lock Industry Standards and Training Council (LIST Council)
The original PDF (272k) |
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