Help me locate this part - Window stabilizer guide

1BAD72 said

That's a great idea. Let me add this, I have an expensive window film applied to the windows to cut the solar heat from the sun here in Florida (3M Crystalline). It scratches easily and I am concerned that the window rubbing on the felt, even under some slight pressure, over time may cause a band of fine scratches in the film that will look like a dull band. Is this small part really necessary? The window seems fine without it. Not loose or wobbling. Can I leave it out?

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The window won't be quite as stabile without it, but I understand your concern about window film as I also have it.
The thing is, the whisker strip will do the same thing over time but over the entire window without those supports and the only thing I could come up with is to fab rubber rollers on those supports instead of felt or whisker material.
I have not done it, but it is the only solution I could come up with and we still have the whiskers rubbing it.
Using Armor all on the window film helps a lot to keep the marring down.