Dave Sr. from SWISCO responded:
May 16, 2017
I'm not sure if we can supply a spring in that size. It sounds very large. These springs were used in Andersen sliding patio screen doors between 1978 to 1991. I believe the hole should be more like 4-1/4" on centers, but I could be wrong. Worst case scenario would be that you would need to re drill holes to accept the 86-012 spring.
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