use provided template to properly install doorknob
mark holes for hardware and drill prepunched holes
drill holes for deadbolt assembly
"with holes drilled, the hardware can be inst
Install the Deadbolt Latch
Most manufacturers include a template to simplify this part of the job. The template adheres to the door and shows where to drill the holes (Image 1). The placement of the template is important -- be aware of the location of the entrance door's handle and be certain that the storm-door handle won't interfere with it.
With the template in place, mark the holes for the hardware. Set the holes using a center punch. Using a 5/16" bit, drill the prepunched holes (Image 2). Follow it with a 7/8" spade bit to drill a hole for the deadbolt assembly (Image 3). Connect the interior and exterior latch through the door with the screws provided.
Line up the striker-plate to make sure it's even with the latch (Image 4); mark the striker-plate and screw it into place. Test the door and make sure it fastens properly.