Single? or Double?

What do they mean by a single or double cylinder? We're not talking about deadbolts.

Cylinder options are most common on entrysets for front doors or exterior facing doors. When specifying which type of cylinder you prefer there are a few things to keep in mind.



A Single cylinder is the most common lock, aside from deadbolts, with a keyed lock on the exterior and a small decorative latch on the interior of the door. They are very functional and user-friendly.




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Double cylinders have pros and cons to their use. Typically with entry doors there are side lights, or panes of glass that accompany the door and add beautiful natural light. However these windows offer access points for robbers who break the glass and unlock the door from the inside. The double cylinder prevents this access by requiring a key on either side to lock or unlock the door. The downside to this method is in emergencies, one does not want to search for a key.


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Where can I find single or double cylinder options? @ www.rusticahardware.com