Tom from SWISCO responded:
October 28, 2016
That's a very peculiar hole spacing. Can you confirm? Make sure to measure from the center of each hole, not their edges.
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Dave Sr. from SWISCO responded:
November 2, 2016
I agree with our pal from California, I think that may be the case, as well. It looks like someone has done some work on your door in the past, so it is likely some of your holes are non-standard. That may be what's throwing us off.
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