SWISCO - The Replacement Hardware Authority

Fin or non-fin seal wood pile?

A home owner says:
I am looking for wool pile weather stripping 3/16 inch wide by 3/16 inch high. I found it from your website, with fin seal (gray) or non-fin seal (white). Color is not a matter but I'm wondering if I need a fin or non-fin seal wool pile weatherstrip. Thanks!
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Tom from SWISCO responded:
It's probably best to replace your wool pile with what you had before. That fin can sometimes provide a better seal, but if your window is not meant to have that kind of wool pile it may also cause too much friction, which would make your window harder to open and close.
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