B and t window balance : SWISCO.com

Home Owner from California

Apr 19, 2025 6:31 pm

The spring broke. Can you identify a replacement please?
Thanks!

3 user uploaded images

6 Replies

Emily from SWISCO

Apr 23, 2025 9:13 am

Hi there!

Your balance appears to match the Series 351 or Series 390, depending on the depth of the bottom shoe. You'll have to measure as shown below.

Can you confirm the length of the metal channel and the stamp printed on the back of it?

Comparison of the S351 and S390 balance shoes.

Home Owner from California

May 10, 2025 3:03 pm

Hi, the channel length is 16 inches. The bottom shoe appears to be nearly 1 and 1/8 inches. The stamp on the channel appears to be either 1540x.
Does this help?

Emily from SWISCO

May 12, 2025 7:54 am

Yes, thank you! Based on the details you've given, I'd recommend the S390-16 with the 1540 stamp option. Take a look at the specifications and let me know if you have any questions.

Home Owner from California

May 12, 2025 4:29 pm

Thanks so much for your help! I just ordered one, plus a few extras for next time. Thanks again!!

Emily from SWISCO

May 13, 2025 7:57 am

I'm happy I could help. Good luck with the repair!