Active Door (in a pair of doors)
The leaf that opens first and the one to which the lock is applied.
Astragal
A moulding 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.
Auxiliary Dead Latch
A supplementary latch which automatically dead-locks the main latch bolt when the door is closed. (also called Dead-Locking Latch Bolt.)
Backset (of a lock)
The horizontal distance from the face of the lock to the center line of knob hub, keyhole or cylinder.
Balanced Matched
Two or more veneer components or leaves of equal size (prior to trimming) to make up a single face.
Ball-Bearing Hinge
A hinge equipped with ball bearings between the hinge knuckles to reduce friction.
Barber Pole
An effect in book matching veneers resulting from tight and loose sides of veneers having different lite reflections when finished. This is not considered a defect.
Bark
Areas of fiber from outside a tree.
Bark Pocket
Comparatively small area of bark around which normal wood has grown.
Bevel (of a door)
The angle of the lock edge in relation to the face of the lock stile. Standard bevel is 1/8" in 2". If otherwise detailed, it must be so noted in ordering locks.
Bevel (of a lock) A term used to indicate the direction in which the latch bolt is inclined; regular bevel for doors opening in, reverse bevel for doors opening out.
Bevel (of a lock front) The angle of a lock front when not at right angle to the lock case, allowing the front to be applied flush with the edge of a beveled door.
Beveled edge
Edge of a door which forms an angle of less than 90 degrees with the wide face of the door, such as a 3-degree beveled edge.
Bit (of a key)
The projecting blade which is cut in a manner to actuate the tumblers and permit the lock bolts to be operated.
Blending
Color change that is detectable at a distance of 6' to 8' but which does not seriously detract from the overall appearance of the panel.
Blister
Spot or area where veneer does not adhere.
Book Match
The most commonly used match in the industry. Every other piece of veneer is turned over so adjacent pieces are opened like to adjacent pages in a book. The veneer joints match and create a mirrored image pattern at the joint line, yielding a maximum continuity of grain.
Bored Lock (or Latch)
Lock or latch whose parts are intended for installation in holes bored in a door.
Box Strike
A strike which also provides a complete housing to protect the bolt openings.
Book Size
The height and width of a door before prefitting.
Brashness
Condition of wood characterized by low resistance to shock and by abrupt failure across the grain without splintering.
Burl
Swirl or twist in grain of wood, which usually occurs near a knot but does not contain a knot.
Butt (Hinge)
A type of hinge desired for mortising into the edge of the door and into the rabbet of a door frame.
Butt Joint
Joint formed by square edge surfaces (ends, edges, faces) coming together.
