A term used to describe the abutting edges of a pair of doors or windows so shaped as to provide a tight fit. One half of the edge projects beyond the other half, usually 1/2". Also used to define that portion of a door frame into which the door fits.

A lock in which the face conforms to the rabbet found on a rabbeted door.

A horizontal member that joins the stiles May be exposed as in a paneled door, or concealed as in a flush door

A metal box-shaped reinforcement for use in a metal door in which a bored lock is to be installed. It provides both vertical and horizontal latch support.

See Bevel.

A lock which, by reversing the latch bolt, may be used by any hand. On certain types of locks, other parts must also be changed.

See Preassembled Lock.

A term indicating articles of hardware designed for application to the surface of doors and windows.

A friction door latch employing a roller latch head under spring tension, which engages a strike having a recess formed to receive the roller.

A strike having a rolling member at the point of latch bolt contact to minimize friction.

A trim plate attached to the door under the knob. It sometimes acts as a knob bearing.

A lock or bolt front conforming to the rounded edge of a doubleacting door. The standard radius is 411 (1 01.6mm)