Window weather stripping

A home owner from Matherville IL says:
I purchased T.270 foam weather stripping item#58-171 and the plastic that slides into the slot on window is to large. Does the T.187 item# 58-182 have smaller plastic strip or is that the foam size?
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Tom from SWISCO responded:
We actually have detailed dimensions for both seals on their respective store pages that include the size of the "T" strip. I will post them here for your convenience.

Profile diagram of 58-171
Profile of 58-182
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