Balance Rods
Hello there. It's tough to tell from these photos, but it looks like your window might use channel balances. The only way to narrow down what you have is to remove them and show us specific photos and dimensions. See the videos below. We'll do our best to help from there.
Thanks. Did you measure just the metal channel for the length, as the second video shows, and did not include the nylon attachments in the measurement? If so, I think this could be an S395-36 Channel Balance. Please compare. You did not provide a stamp option. Look for an old stamp on the metal channel that denotes what to pick. Again, the second video above explains. Let us know if you have further questions.
Thanks for the response. Yes, this appears to be an S395-26 Channel Balance. For a stamp option choose 2520. Let me know if you have further questions.