Once the holes have been made you can then screw the lock into the door.
How to fit patio door lock.
How to install a lockking security bar lock for a patio door or sliding glass door.
Then on the door where the slide bolt will go drill a hole where the bolt will be placed.
Using your magnet clean up all the metal shavings around the holes.
When you have added the main body of the lock and the lock bolts to the door then you can add the cover plate.
Take out the existing lock and bring it to a home improvement or hardware store and purchase a new lock that will fit your patio door.
Using the correct drill bit drill the holes that you have marked.
Replace the patio door lock.
When the lock is screwed into place take the bolts and fit them into the door frame facing the lock.
Easy to install and easy to.
These should line up with the lock.
Key lock and housing product code.
Then screw in the base and bolt sides drawing the bolt back into lock position.
Step 4 finishing up.
Made in the usa of aircraft quality aluminum.