Window wool pile weatherstrip

A home owner from Michigan says:
I need to replace the weatherstripping on my Certainteed vinyl windows. The weatherstripping is white, 1/4" high with a 3/16 base and a double fin. Your website shows the 58-127 weatherstripping. Does it have a double fin, and if not is the double fin necessary?
Thanks, Jim
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Paul from SWISCO responded:
Thanks for posting, Jim. I think the 58-127 is a great choice for your CertainTeed window. It comes with only one fin seal, but that should be sufficient for your window.
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