A double cylinder deadbolt assembly includes two keyed cylinders, one for the outside of the door and one for the inside. As the double deadbolt requires a key to lock or unlock from either side, it ensures that the lock cannot be accedentally locked or unlocked without the key. This also means that even if someone breaks a window near the door they will be unable to simply reach in and unlock it. It is important to make sure that a double deadbolt can be legally installed on the door you plan to install it on as in emergency situations it can pose a fire risk. To help with some residential laws we do sell ‘Emergency Keys’ which can make the lock meet code in many situations.
if you need any of these locks installed please fill free to contact the link below..
http://www.locksmith-alexandria.com/
