Balance

Question

Existing balance is from a Seasonshield sh window.
30 inch length / 1/2 inch channel w/ID # "29 5 IX CMC 7"

Casey · Accepted Answer

Hello,

It looks like you have either our S351-30, with a 15-002 bottom attachment, or S390-30, 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 2950 spring strength option for your replacement balances. Thank you!

Comparison of the S351 and S390 balance shoes.