Slot Cover for Window?

A home owner from Nassau County, NY says:
September 5, 2020

Jalousie windows - vertical plastic rectangle with 3 convex 'columns' - one per window frame, at lower left

It's not clear what this piece's function is. On one window frame, it came loose and was lost lost. The others are snapped into place.

Its height is 5 5/8" and width is 3/4". Depth is < 1/4".

I'll appreciate your identifying this part and advising if I can order it.

Thanks, Fred S.

Thumbnail of the uploaded file named Jalousie window frame part (close).jpg
Thumbnail of the uploaded file named Jalousie wndw frame corner w part.jpg
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Bob from SWISCO responded:
September 9, 2020

Hey Fred. This Slot Cover is meant to cover up the space where a window operator would otherwise go. See if our 39-355 matches up. 
A home owner from Nassau County, NY says:
September 9, 2020
Thank you, Bob, that's the one. I am ordering some replacements.
Awning Crank Operator Slot Cover
Awning Crank Operator Slot Cover
39-355
$1.22
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