Callan Double Cylinder Deadbolt

Double Cylinder Function: Double cylinder deadbolts are keyed on both sides of the door and are only locked and unlocked via a key. Often times they are used on doors where glass is near the door that could be easily broken and the thumbturn on a standard single cylinder lock would be accessible. Caution: Double Cylinder locks can pose a safety hazard in times of emergency due to requiring a key to unlock. Please check local codes before installing. Caution: Double cylinder locks on residences and any door in any structure which is used for egress are a life safety hazard in times of emergency and their use is not recommended. Installation should be in accordance with existing codes only. Features: Meets BHMA security grade 3 requirements Made of durable zinc Fully reversible handing for left or right handed applications Designed for an easy one person installation Comes standard with a round corner latch faceplate and 1" throw Includes a limited lifetime warranty on mechanical parts and a five year warran...