It is designed to be a flush mount, meaning that the handles are fitted into the body of the door frame, which also makes them very suitable for pocket doors.
This beautiful and simple design is fundamentally different to many other similar type products because the actual latch only requires a small hole in the door edge for installation.
There are very few key lockable patio/pocket door locks available at such a competitive list price.
Installation of these locks often requires some patch work necessary to fill the holes in the PVC door frame. We use a very special product especially designed to repair virtually any PVC frame or pipe. It is designed to fill the existing hole/s simply and matchable to virtually any color.
The list price on this lock is $29.99 but it can be found even cheaper if you search in depth online.
Pocket Door Lock/Patio Door Lock with key, now available here today.
This product is designed for maximum 1-1/4" thick doors. I know this from first hand experience and not reading the instructions properly.