Description For use on interior bedroom and bathroom mobile home doors. Both bell-shaped knobs locked or unlocked by turnbutton inside. Outside knob unlocked by emergency key. 7/8" Edge Bore. DOOR PREP: 2-1/8" Cross Bore, 1" x 2-1/4" Latch Face. BACKSET: 2-3/8" standard and adjustable 2-3/8" and 2-3/4" optional. DOOR THICKNESS: 1-3/8" to 1-3/4". CYLINDER: 5-pin. FACEPLATE: 1" x 2-1/4". STRIKE: 2-1/4" high full lip. BOLT: 3/8" throw. HANDING: Reversible for right or left hand doors. ANSI/BHMA: A156.2 Grade 3.