Spring balances for most likely Anlin windows

Hello, thank you for posting,

Please review the style and dimensions of the S140-17 coil balance that can support 17 pounds of weight. Together with the other side, the total sash weight should be 34 pounds. 

Alternate image for S140-17

If you also need a new pivot bar, we will need to see the end tip that engages with the pivot shoe. In the meantime, start by comparing the 26-398 or 26-405 that are commonly used with this style of coil balance. Let us know what you think!