2230 stamped on it.

Quick Learner from New York

I am in need of replacements for the attached pictures of the window balance.

Based on what I found on your website. I think it's a 390 series.

23 inch.

I'm not sure if you need to order a separate right and left one or if they're interchangeable.

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Quick Learner from New York

I need replacement for this window balance it measures 19 inches, with an 1840z stamp. Look at attached pictures and let me know if there's any questions.

5 user uploaded images
Jasmine
Jasmine from SWISCO
SWISCO
Expert

Thanks for reaching out to us! Your balances can be replaced with either the Series 351 with a 1" shoe or the Series 390 with a 1-1/8" shoe. To determine which of these is the correct fit, you'll need to confirm the depth of your shoe.

The stamps would be remain 1840 and 2230 for the replacements.

Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.

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