Non tilt channel balance for All Weather vinyl non tilt.

Hello,

It looks like you have either our S351-21, with a 15-002 bottom attachment, or S390-21, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. You'll also need a 2040 spring strength option for your replacement balances. Thank you!

Comparison of the S351 and S390 balance shoes.

In that case, you would need the 21" long S390-21 channel balance with a 2040 strength option.