Klein is on the window crank and GTK 77 inside glass frame

A home owner from Indiana says:
Size is 1/4 × 1/4 and 9/32 for sweep. Was wondering if can't find this type if a more modern bulb type work for this application?
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Tom from SWISCO responded:

I don't recognize this weatherstripping, unfortunately. It's similar in design to our 58-175, but this is only used on Pella windows. If your window is not Pella brand, then I'm not sure how well this would work.

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