Certainteed casement weather strip

A contractor from Emmaus pa says:
This weather strip has approx a 3/8 x3/8 projection and the kerf goes into the window approx 1/4-5/16 of an inch. Any suggestions for a replacement would be appreciated. Replacement is no longer available from certainteed since their buyout. Thank you.
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Tom from SWISCO responded:

We don't have a match for this weatherstripping, but our 58-170B is similar. Could you possibly use this as a replacement? Look it over and let me know what you think.

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