just a little word to the wise. any key lock or deadbolt can be broken into in a matter of seconds. search lock bumping on youtube or google and it will teach you how. i tried it and it is actually very simple to do. it makes you feel like a real houdini when you pop one open. apartment growers i would highly suggest some sort of non key back up lock as a precaution. you can get some decent hidden remote control locks here on the internet if you search around....