odd window roller

A handy person from California says:
October 12, 2017
18 year old aluminum window, two pieces per, sets on a piece of removable nylon inserted in the track area.
_
Track is shaped like this / \

No markings/identifiers on the windows that I can find.

I would appreciate any help you can give me.
Thank you.
User submitted photos of a window roller.
Profile picture of Casey
Casey from SWISCO responded:
October 17, 2017
Thank you for your post. I hope I can help you. The closest match I was able to locate is our 87-181 roller assembly. Take a good look and let me know what you think.
Tandem Roller Assembly
Tandem Roller Assembly
87-181
$3.55
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