What Is a Double Key Deadlock?
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Is adding a double-cylinder deadbolt to an exterior door a good idea? Find out about the pros and cons of adding double-keyed deadbolts vs. single-keyed deadbolts to exterior doors for safety and security. Deadbolts with two keys pose unique challenges.
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Do you need a “double keyed” or double-cylinder deadbolt?
3100 Series Grade 1 Deadlocks Heavy Duty Commercial Double Cylinder (ANSI E2141) - Deadbolt thrown or retracted by key from either side. Bolt
Hager Grade 1 Deadlock Double Cylinder Satin Chrome 2-3/4 BS Standard Strike - 3114-234-US26D-NC-KD-3930
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