Roller & housing sliding window

A quick learner from Pacifica says:
Sears installed 20+yrs ago. Mfg could be Alside or Wincore. No markings on window.
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Tom from SWISCO responded:

This looks just like our 18-073 top sash guide. Now, top sash guides are not typically used for horizontal sliding windows, but I think this particular part can serve a dual purpose. Look over our dimensions to confirm. You could also use our 87-094 as the wheel (sold separately).

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