Deadbolts b-series - double cylinder triple option universal - latchbolt heavy-duty residential/light-duty commercial"maximum security" boxed square corner - triple option universal latchbolt finish=antique brass keying=k4. Antique brass, double cylinder deadbolt, maximum security, triple option latch, universal 2-3/8 inch or 2-3/4 inch backset, ultima lifetime anti-tarnish finish, lifetime mechanical warranty, grade 1 security features, box pack. For residential single and multifamily entrance doors. Deadbolt thrown or retracted by key from either side; bolt automatically deadlocks when fully thrown. 7/8 inch wrought brass trim ring reinforced with security inserts. Concealed spin ring rotates to protect against wrenching the cylinder. Solid steel door frame reinforcer with 3 inch screws protects against kickin attacks. Solid, 1 piece design to protect against hammer and crowbar prying attacks. 21/2 inch steel adapter ring, plated to match, provided for accommodating 21/8 inch crossbore. Door prep: 11/2 inch or 21/8 inch crossbore; 7/8 inch edge bore; 1 inch x 21/4 inch latch face. Door thickness: 13/8 inch to 13/4 inch. Cylinder: Solid brass, 5pin, tumbler c keyway with nickel silver,pick resistant, spool pins and 2 nickel silver, 5pin, c section keys. Faceplate: 1 inch x 21/4 inch. Strikes: 11/8 inch x 23/4 inch, no lip, with dust box and door frame reinforcer. Bolt: 7/8 inch housing and 1 inch throw with concealed hardened steel roller to prevent cutting or sawing. Ansi/bhma: Exceeds a 156.5, 1992 grade 2 with grade 1 security features. Triple option universal: Fits all doors, 23/4 inch or 23/8 inch backset; square corner, round corner, or drivein preps. Secure key feature allows you to rekey the lock without ever removing it from the door.
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