Broken channel balance stop

A home owner from Ephrata, WA says:
Do you have one of these (fig 1)?
Fig 2 is the left side and it is OK Fig 3 is the right side and is broken.
I need to replace the broken one.
Thanks
Chuck
Thumbnail of the uploaded file named Window thingy.png
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Bob from SWISCO responded:

Hey Chuck. This looks like the 18-171 Alpine Top Sash Guide. Please compare, and let me know if this matches what you need.

Alternate image for 18-171
Alternate image for 18-171
Alternate view of 18-171
Alternate view of 18-171
Alternate view of 18-171
Alternate view of 18-171

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