Cannot identify my Sash Guides

A handy person from St. Louis says:
None of the sash guides on your website seem to match mine exactly--they have no numbers, stamps, or marks.

Two pics with measurments (in inches) are attached.

They fit our school windows, aluminum 2 pane, mid 70s (maybe) vintage.

Thanks for your help--Mike
User submitted photos of a top sash guide.
Profile picture of Tom
Tom from SWISCO responded:
Thank you for posting! Please see our 18-138 and let me know if this is a good match.
18-138 : Top Sash Guide, 3/4
Top Sash Guide, 3/4"
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