For Hall And Closet, All Interior Doors Where A Simple Latch Is All That Is Required. Both Bell-Shaped Knobs Always Free; No Locking Mechanism. DOOR PREP: 2-1/8" Cross Bore, 1" Edge Bore, 1" X 2-1/4" Latch Face. BACKSET: 2-3/8" Standard And Adjustable To 2-3/8" Or 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: 1/2" Throw. HANDING: Reversible For Right Or Left Hand Doors. ANSI/BHMA: Grade 3.