Jordan Window Sash Guide Replacement

A home owner from Florida says:
Looking for your closest match to the Jordan window sash guide shown above. All measurements were taken from the part itself. I can't seem to match it to any particular one.

What is the most important aspect for the fit? I can't find a match that has the same screw hole ratio, do I need both screws or can I do with just one?
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Thumbnail of the uploaded file named image.jpg
Thumbnail of the uploaded file named image.jpg
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Jasmine from SWISCO responded:

Thanks for posting. I believe the closest match we have to your Jordan Window top sash guide is our 18-199. I am confident this is the replacement you'll need. Look over the dimensions and double check the measurements for your top sash guide to confirm that this is the best replacement for your window. This part is only available in white.

Dimensions for 18-199
Dimensions for 18-199

Dimensions for 18-199
Dimensions for 18-199

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