Glossary of Terms
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Active Door (in a Pair of Doors)
The leaf that opens first and the one to which the lock is applied.
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AHC
Indicates that the individual so identified is a qualified Architectural Hardware Consultant and member of the Door and Hardware Institute.
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Anti-Friction Latch Bolt
A latch bolt designed to reduce friction when the bolt starts to engage the lock strike.
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Architectural Hardware
Term applied to all hardware used in building construction but particularly that used on or in connection with doors, windows, cabinets and other movable members.
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Armor Plate
A plate similar to a kick plate but covering the door to a greater height, usually 40” (1040 mm) or more from the bottom.
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Astragal
A molding or strip whose purpose is to cover or close the gap between the edges of a pair of doors. Some types overlap, others meet at the center line of the gap.
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Auxiliary Dead Latch
A supplementary latch that automatically deadlocks the main latch bolt when the door is closed. (Also called Deadlocking Latch Bolt.)
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Auxiliary Lock
A lock that is installed in addition to the primary door lock to provide additional security.
