balance guide?

A quick learner from Grand Junction Colorado says:
This part is out of 40 year old aluminum windows. We have 200 of the windows in our property and these are starting to fail. Do you have anything like this?
Thumbnail of the uploaded file named top sash guide
Thumbnail of the uploaded file named top sash guide
Thumbnail of the uploaded file named top sash guide
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Emily from SWISCO responded:

Hey there!

It doesn't look like we have an identical match for this top sash guide. The 18-174 is similar in design though. We recommend you review the dimensions below to see how they compare with your old part.

Side view of 18-174
Side view of 18-174

Detail of 18-174
Detail of 18-174

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