Spring Balance
Hi there!
Thank you for reaching out to us. We're happy to help with this. If you need the pivot bar, take a look at the specifications of the 26-360 and see if they match what you need.
As for the balance, can you confirm the length of the metal channel?
It's very unusual for this type of balance channel to be on the half-inch. However, take a look at the S795-35. It will be 1/2" longer, so you might have to lower the window stop at the top of the window so as not to break the t-lock shoe when fully raising the window sash. You can also select the 35D stamp option. A pair of balances with this stamp will support a sash weighing 27 to 32 pounds.
Please let us know if you have any questions.