For heavy-duty residential and light duty commercial doors. For keyed exterior doors. Both knobs lock or unlock by key outside or turn button inside. Deadbolt thrown or retracted by key from outside or by inside turn unit. Includes one #360 single cylinder deadbolt and one No. F51 Georgian entry lockset, both deadbolt and entry are keyed alike. Deadbolt has a 7/8 in housing and 1 in throw with concealed hardened steel roller to prevent cutting or sawing. Entry lockset of solid wrought brass with pressure cast zinc tubular housing. Triple option universal latch fits any door, 2-3/8 in or 2-3/4 in backset, square corner, round corner or drive in preps. Lockset meets ANSI A156.2 Grade 2, deadbolt exceeds ANSI A156.5 1992 Grade 2 with Grade 1 security features.