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Measure 9 1/5 inches from the second hole down and 13 3/4 inches across from the left and mark and drill with the 5/16 bit. Next, measure 7 1/2 inches from the right side of the door and 6 inches down from the bottom crease of the door latch cover; also drill with a 5/16 bit. The last hole is for the front run channel guide that will require adjustment inside the door. This may be a good time for you to cut the square hole out for easier access, but again this is optional.