Heavy-duty, keyed door lock is designed for exterior locking applications, such as an entry door. Doors must be 1-3/8" to 1-3/4" thick to accommodate the door lock. BumpStop advanced cylinder resists bump attacks. Cylindrical construction delivers enhanced durability. Grade 2 commercial door lock also features ASA strike, 2-3/4" backset with UL latch, six-pin Schlage C compatible cylinder standard, and satin chrome finish. Lock meets ANSI/BHMA A156.2, Grade 2 Standards.