Designed as extra security for exterior doors.
How to make a 2 way lock on a door.
Begin by removing the screws from the door knob on the interior side of your door.
Twist to lock deadbolt lock keyless twin lock keyed alike with 10keys lathe finish after 304 stainless steel casting front door lock single cylinder deadbolt and door knob with keyless locking design.
Check all exterior doors.
Remove the two screws from the latch plate on the edge of the door and remove the latch from the opening.
A sturdy screwdriver or small pry bar can quickly bow the doorjamb enough to release the latch.
Any exterior door that only has a lock in the doorknob isn t secure.
Most external doors are pre drilled for deadbolts making installation easy.
For use in combination with a door knob lever lock.
In some cases door latch plate mortises might need to be cut or enlarged.
I needed to lock a toilet door from the inside the other day and there was no lock.
Models are available with single and double cylinder functions.
Not being able to wait for shipping i improvised using a bit of kitchen hardware.
A secure entry starts with a solid door and a grade 1 or grade 2 deadbolt with a solid 1 in.
Long throw bolt see buying a deadbolt.
This allows you to pull the door knobs off the door from both sides.
Electronic door locks use an electronic keypad instead of a key.