Window balance

Hello,

It looks like you have either our S351-16, with a 15-002 bottom attachment, or S390-16, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. Also, note that our balances use a hook at the end of the pulley to install, which is missing in your photos. You'll also need a 1510 spring strength option for your replacement balances. Thank you!

Comparison of the S351 and S390 balance shoes.