Sash guide

A home owner from Florida says:
I'm looking for white top sash guides (need 10) but can't find the specific size I need. If a different size will work please let me know. I attached a Drawling of the piece I need. I'm having difficulty with the windows and didn't want to remove it again to take a picture since I live in Florida and it's dark out now 9:22pm (The mosquitoes love my blood). I appreciate any help and advice you can give.

Thanks
Louis
sash guide
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Tom from SWISCO responded:
Hello Louis. We believe you may have a Larson window. Therefore, please take a look at our 18-192 top sash guide. Carefully compare your measurements to ours and let us know if this is a good match for you.
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