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How to install door lock.
If your new deadbolt has a concealed screw for the interior door knob consult the installation instructions for your specific lock.
Alternatively you can buy a re keying kit for the lock you already have.
The measurement is usually 2 3 8 inches for interior doors and 2 3 4 inches for exterior doors.
Doorknob locks offer little resistance to a determined burglar and what other kind of burglar is there.
Deadbolt locks extend through the doorframe and into the wall.
Next put a new latch in and replace the door knob.
Installing a deadbolt lock is essential to protecting your home.
Once you have the kit remove the lock cylinder from the door knob so you can change the pins inside.
If you re installing a lockset in an existing door take out the old lockset and measure the backset the distance from the door edge to the center of the lockset hole.