Kwikset Weiser Montreal series passage lever lockset with Ansi/bhma: Grade 2 maximum security rating. Features include round corner latch and strike, a polished chrome finish and reversible. Signature series, 6 way adjustable steel latch fits both 2-3/8 inch and 2-3/4 inch backsets, 7/8 inch and 1 inch drive in, detachable round and square corner faceplates, round corner strike, limited lifetime mechanical warranty, limited lifetime finish warranty. Door prep: 2-1/8 inch cross bore, 1 inch edge bore, 1 inch by 2-1/4 inch latch face. Backset: 2-3/8 inch standard, 2-3/4 inch optional. Door thickness: 1-3/8 inch to 1-3/4 inch. Faceplate: 1 inch by 2-1/4 inch. Strike: 2-1/4 inch full lip. Bolt: 1/2 inch throw.