Orbit Privacy Door Knob Set from the F-Series This Schlage Orbit Knobset is typically used on Bedroom and Bathroom doors where locking from the inside of the room is needed but you do not need to lock the door from the exterior of the room. Interior screws are exposed Both knobs locked/unlocked by push button inside Can be unlocked from outside with emergency key that is included with your purchase. Turning inside knob unlocks outside: this is known as a Panic Proof Function. This Door knob set is compatible with Right and Left handed doors. Adjustable Backset 2-3/8" or 2-3/4" Unit is non handed and is field reversible. Faceplates (Part 16-080): Supplied with 1/4" Round Corner and Drive-In Faceplates Strike Plates (Part 10-027): Supplied with a Round Strike with Dimensions of 2-1/4" x 1-5/8"