T slot bulb weatherstripping

A quick learner from ambler, pa says:
Need to confirm. My photo looks slightly different from pictures on your site. The weatherstripping I have is a .187 t-slot. However, the foam bulb is closer to 3/8 inch or .375 diameter. In addition it appears an angled piece comes off the picture you posted, versus no angular piece on my weather stripping?
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Bob from SWISCO responded:

It's not exact, but I'm wondering if the 58-183 might be a better match. It's bubble is 3/8" wide; it being hollow I don't think would make much of a difference. This does have a flange your strip seems to lack. Let me know what you think. 

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