
The recommended locks may not always line up exactly with the existing top and bottom screw holes. In these cases, two new screw holes may need to be drilled. The purpose of the recommendation is to ensure that, once installed, the new lock fully covers the existing holes.
Note: To confirm that the new lock will cover the existing holes, measure your current lock from the top of the lock to the centre of the handle, and from the bottom of the lock to the centre of the handle. Compare these measurements with those of the new lock before installation.