Retrofitting a wool and leaf seal on Pella

A quick learner says:
Can this product be used to replace the leaf seal surrounding the sash perrimeter on pella casement windows?
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Paul from SWISCO responded:
Good Afternoon,

To be honest with you, I'm not quite sure. But as long as the bottom guide slides in the track and the height of the wool pile is correct, I think it should work.
A quick learner from Warwick, Rhode Island says:
The fin you are referring to should be replaced with the exact part it's just a rain strip to prevent a driving rain from directly contacting your sill stop. If you notice the corners are open to allow drainage for rain that gets in behind it. Now if you window looks out of square as if it is sagging their are ways to compensate so that the weatherstripping does not pull out or bind.
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