replacement for EntryGard on Marvin windows

A home owner from NH says:
The worm gear is stripped on the EntryGard for one of our Marvin "French Windows". I think this is the "extra short link arm" version. Please see the attached picture -- would you agree that your 39-334 is the correct replacement? (I had trouble getting accurate measurement of the longer arm --does this vary, too?) thx
Thumbnail of the uploaded file named IMG_2932.JPG
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Tom from SWISCO responded:

I agree, the 39-344 does look like a good match. As long as all the dimensions match those we show on our site then I think you're good to go.

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