26 4 DP Caldwell replacement window side balancer

Home Owner from California

Aug 18, 2025 10:53 pm

Hi,
My window side balancer recently broke.
I would really appreciate any help with identifying the part so I can buy a replacement.
Thanks!

5 user uploaded images

5 Replies

Casey from SWISCO

Aug 25, 2025 1:01 pm

Hello,

We'd be happy to look into this for you but we'll need a bit more information to narrow down your options. If you could show us the connecting point between the spring and pulley inside the metal channel, that would help us confirm if our stock balances could work for your repair or if they would need to be special ordered. Thank you!

Home Owner from California

Aug 25, 2025 2:00 pm

Hi Casey,
Thanks for reaching out.
I have attached the requested pictures.

2 user uploaded images

Home Owner from CA

Aug 25, 2025 2:33 pm

Hi Casey,
Thanks for the reply.
I have attached the requested photos.

2 user uploaded images

Casey from SWISCO

Aug 25, 2025 2:50 pm

Thanks for getting back to us. With this combination of attachments, you could have either the S380-27 or S385-27 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment.

You'll also need 2640 spring strength options for your replacement balances. Thank you and let us know if you have any other questions or concerns.

Comparison of the S378, S380 and S385 balance shoes.