COMMON TERMS :
Backset: The distance from the edge of the door to the center of the face bore.
Drive In Latch: For doors with a 1" hole bored in the edge and no mortise.
Mortised Latch: For doors with a 1" hole bored in the edge and also a mortised edge for a finish plate.
Interior Lock Handing: Determines the correct direction of a curved lever for your door. Handing is only needed on handles with a curved design. Not needed for straight handles or knobs with the exception of the Telluride - Custom Tall Trim Plate Series - All Telluride with levers straight or curved require handing.
Interior Dummy knobs/levers:A full Dummy is two pull knobs with trim plates that screw to the face of an unmachined door. They do not turn or function in anyway. Typically you use dummy knobs on a door that has roller or ball catches.
Exterior Lock Handing: Exterior door lock handing for both Inswing doors and outswing doors shown below
Exterior Left Hand Inswing
Exterior Right Hand Inswing
Exterior Left Hand Outswing
Exterior Right Hand Outswing