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Dave Sr. from SWISCO responded:
July 24, 2018
We have two operators similar to yours. See our 39-016 , which has a threaded hole at the end of the link arm, and our 39-057 , which has a 3/8" hole at the end of the link arm. Look at both to see which one matches up best. Looking at your photo, I'm leaning towards the 39-057 , but look over it to make sure. |