Replacement window balancer

Hi Jim. I am having a hard time getting a good look at both of your nylon fittings at the ends of the balance. Could we have you send us two more photos showing just those fittings? Those pieces help determine which of our replacement balances to recommend. Thank you. 

These photos are helpful, thank you. It looks like your bottom balance shoe looks to have broken or worn down over time? Could you confirm that to be true? In the meantime, have a look at both our S385-17 and S380-17 balances. Depending on the 'depth' measurement of your bottom balance shoe will determine which of these two balances would be the better fit. You may want to make those comparisons with a balance that has little to no damage to it as possible. Whichever one chosen will go with the 1640 option that holds a sash weight of 14-19 pounds.