Vinyl strip foam filled

A home owner from Greenwood DE says:
There is no number on the vinyl strip there is MDL 1010 on a label on one of the Alliance double hung windows. I hope that this email is bundled with the original email.
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Julia from SWISCO responded:

Hi there, thanks for writing in. It's a little difficult to decipher the precise shape of your weather stripping, but I can tell it's a bubble seal. Take a look at the parts I've associated on the side and see how they compare to your original part. 

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