Sliding Window Balance Part and Wheel

A landlord from Pomona, California says:
The window brand is ATRIUM.
This is a Sliding window balance.
markings found on this:
25-9 IX CC 11

where can i buy this part?
where can i buy the wheel set.
Thumbnail of the uploaded file named winged top fitting
Thumbnail of the uploaded file named wingless bottom shoe
Thumbnail of the uploaded file named channel balance assembly
Thumbnail of the uploaded file named concave wheel
Thumbnail of the uploaded file named sliding window roller assembly
Profile picture of Emily
Emily from SWISCO responded:

Hey there!

Our S395-26 with the 2590 stamp option looks like a good match. Have a look at the specifications and see if you agree.

Unfortunately, we do not sell a replacement for the roller shown here. The best we can offer is to see if you can replace just the wheel with the 87-089. I am very sorry that we can't be of more help. 

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