Description For hall and closets. Both knobs always free; no locking mechanism. Features titanium alloy throwbolt core, anti-pick 6 pin system and ultra-strike for jamb brace. DOOR PREP: 2-1/8" Cross Bore, 1" Edge Bore, 1" x 2-1/4" Latch Face. BACKSET: adjustable to 2-3/8" or 2-3/4". DOOR THICKNESS: 1-3/4" doors standard. 2-1/4" doors optional. CYLINDER: 6-pin. 5-pin optional. FACEPLATE: 1" x 2-1/4". STRIKE: 2-1/4" full lip. BOLT: 1" throw. Nickel plated. HANDING: Reversible for right or left hand doors. ANSI/BHMA: Grade 2.