Double hung window middle seal

A home owner from Indiana says:
Hi, this is the middle seal in a double hung window. Slides into outer window casing and provides seal against inner window.
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Emily from SWISCO responded:

Hello there!

Thanks for reaching out to us. I'm sorry to say that we don't sell the insert piece shown here. As for the seal, our 58-156 comes to mind but I'm not certain this is what you have. Look over the specifications and see what you think. 

Profile view of 58-156
Profile view of 58-156

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