Description For use on interior hall or closet mobile home doors where a simple latch is all that is required. Both bell-shaped knobs always free; no locking mechanism. 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" full lip. BOLT: 3/8" throw. HANDING: Reversible for right or left hand doors. ANSI/BHMA: Grade 3.