For Bedroom And Bathroom Doors. Inside Locks/Unlocks By Turnbutton. Outside Lever Unlocks By Emergency Key. DOOR PREP: 2-1/8" Cross Bore, 1" Edge Bore, 1" X 2-1/4" Latch Face. BACKSET: 2-3/8" Standard, 2-3/4" Optional. DOOR THICKNESS: 1-3/8" To 1-3/4". FACEPLATE: 1" X 2-1/4". STRIKE: 2-1/4" Full Lip. BOLT: 1/2" Throw. ANSI/BHMA: Grade 2.