Window Balance
Thanks for your post! I'm am confident we have the replacement balances you need; although, I'll need a bit more information to narrow down the correct series. To start, I'll need to see a photo of the top nylon attachment on the balance channel. These photos all display the bottom shoe.
Please also provide a full view of the spring and the string inside the balance channel. Particularly, the bracket connecting them in the middle of the balance.
Feel free to reach out with any additional questions you might have.
Thanks for the additional photos. Be sure to double check the length, shoe depth, and stamps from the other balances to ensure they are the same.
This particular window balance can be replaced with either the S380-26 or the S385-26. To determine the correct series, you'll need to measure the depth of the bottom shoe.
You can likely use the 2530 in place of the 25 3 stamp on your channel. Although, it would be encouraged to check that the sash weighs between 15 to 19lbs.