Window sash balance

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Quick Learner from Hollywood, FL

Jan 9, 2021 2:49 pm

Trying to find the part required. The stamp says 2930 but I don't know what caps I have.

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2 Replies

Casey from SWISCO

Jan 12, 2021 9:07 am

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 2930 spring strength option for your replacement balances. Thank you!

Comparison of the S351 and S390 balance shoes.