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Replacement Locks For Patio Doors at Lowe's Replacing the lock on your patio door can be an easy way to improve the security of you home. However the correct installation and regular maintenance is crucial. It is crucial to know what kind of patio door lock that you have in order to replace it successfully. You can identify the type by observing the size of the screw hole and end face plate type. Identifying your existing lock It's important to know the distinctions between different kinds of locks pr