Top sash channel guide

A home owner from LAKE MARY FL says:
No markings found. About 11/16 wide, 1-11/16 tall, 'cap' is about 15/16 x 15/16, under 'cap' is 11/16. Hole is about 3/4 below underside of 'cap'.
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Tom from SWISCO responded:

Thank you for your patience during this busy season. I'm afraid I haven't had much luck finding an exact match for this top sash guide. Please bear with us just a little longer as we try to hunt something down for you. I hope to have an answer as soon as possible.

A home owner from LAKE MARY FL says:
Thanks for the update. Please let me know if you need any other measurements.
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Paul from SWISCO responded:

I believe you can use our 18-110B nylon top sash guide. The dimensions seem to match. Look it over and let me know if you had any questions.

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