https://www.dooronthego.ca/toronto-patio-sliding-door-repair/

There are two different types of these locks, plus they're surface mount steel or clocks mortise locks. Whenever you're going to take part in the repairs of your locks, you will need first to decide what is most suitable for your door. If you go for surface mount locks, then you'll permanently bolt or twist the lock right onto the door frame. The lock hasp is going to be attached to the door jamb that joins to the locks you're playing in.