Dave Sr. from SWISCO responded:
November 27, 2012
Thank you for posting! First, I should mention that this lock only goes with an Andersen type door. If you are replacing this part on an Andersen door, all the holes should already be apparent. The 83-018 goes on the door, then the 86-023 goes on the door jamb. If your door is not Andersen, then this hardware will likely not work for you.
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