This is from a PlyGem Pro Series 200 Retro-Fit Vinyl single hung. The metal piece that looks like a track measures 23.375 inches.
Which replacement balance will I need?
Thanks for posting! This appears to be an Extended-Travel Channel Balance and will need to be a custom assembly. There is a good chance we can supply you with the replacements you need, but I will need to see a photo of an undamaged balance to identify the exact balance you need. I'll especially need to see a photo of the bottom shoe.
Also, can you please confirm the stamp from the metal channel? It is a bit difficult to read from the photos.
The last piece of information I'll need is the exact number of balances you intend to purchase; there is an order minimum of (2) balances.
Once I have this information, I'll be able to confirm pricing and availability and get the link sent over to you.
Please don't hesitate to reach out with any questions you might have.