Storm Door Replacement Fin

A quick learner from Atlanta says:
This is an old storm door fin - not sure who made the door but it might be Larsen. Top is a "T" approx. 5/16" wide but it has 2 fins coming out from it, can't find a version of this anywhere. Let me know what you think.
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Tom from SWISCO responded:

I'm afraid that we couldn't find an exact match for this weatherseal. The closest that we have is our 58-134, but it has a 9/32" wide "T" base and a bubble at 9/32" in diameter. Could you possibly still get this to work in your window, despite its differences?

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