If you plan to replace an existing handle and lock, there is no need to drill new holes. However, you must note the measurements when choosing door handles and locks to ensure the new set will fit the existing holes.
- Measure the thickness of your door
- Measure the distance between the holes for the handle and lock, center to center.
- Measure the diameter of the holes
- Measure the distance between the hole for the handle where the spindle is inserted and the screw hole on the bottom of the handle. If the length is not the same, the old holes will be exposed and will require filling and may still be visible.
If you are installing an exterior door, choose the handle and lock at the same time. When you place your order, the manufacturer will drill the necessary holes in the appropriate places.
If you are buying a new door and the holes are not pre-drilled, use the template provided by the lock manufacturer to ensure holes are drilled correctly.
The template included with the new handle is a sheet of paper indicating where to drill to install your deadbolt lock. Before you start, use the template to compare the dimensions of the holes on the lock and handle.