Identify this Balance Top

A quick learner from Chicago says:
I purchased channel balances for my non-tilt windows. I discovered I need new balance tops. Can you identify balance tops from my reference photos attached.

Ron Wu
User submitted photos of top sash guide.
Profile picture of Tom
Tom from SWISCO responded:
Hi, Ron. Can you compare what you have to the 18-039 top sash guide? Do the measurements match?
A quick learner from Chicago says:
Yes_ this part seems to be a match_Thanks,Ron
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