Window Channel balance springs

A handy person from Los angeles says:
Hi please provide the part replacement number for the window channel balance noted in the attached pictures.
Thank you!
Thumbnail of the uploaded file named C5E98C49-BF99-4464-AC7A-ACDB00402ADE.jpeg
Thumbnail of the uploaded file named 0B85477D-CFAD-4FB7-9F54-56CDCEE30462.jpeg
Thumbnail of the uploaded file named 721EC90F-E2A2-4C81-A233-67B403EF8AFA.jpeg
Thumbnail of the uploaded file named D006F22A-87D8-42D0-8A21-A8A91B6F888C.jpeg
Thumbnail of the uploaded file named 06B13E52-293E-4CF3-975C-F20673862228.jpeg
Profile picture of Bob
Bob from SWISCO responded:

Thanks for posting. Is the metal channel 28" not including the nylon attachments at both ends? If so, this looks like either an S380-28 or S385-28. The only difference between these two balances is the depth of the bottom nylon shoe, or the 'heel-to-toe' measurement. See the image below for reference. Compare both balances with your old hardware to see what matches best.

Comparison of the S380 and S385 balance shoes.
Comparison of the S380 and S385 balance shoes.

You'll also have to choose a stamp option, which reflects the strength of the balance. Look for a stamp on the metal channel that indicates this. If there is no stamp or you are unsure, weigh the window sash that these channel balances support. You can then match that exact weight with one of the weight ranges listed alongside each stamp option under the product description of each and every channel balance shop page.

How to Replace a Non-Tilt Channel Balance
How to Replace a Non-Tilt Channel Balance
VIDEO
WATCH >
How to Repair a Jammed Window
How to Repair a Jammed Window
VIDEO
WATCH >
How to Identify Replacement Channel Balances
How to Identify Replacement Channel Balances
VIDEO
WATCH >
How to replace a channel balance
How to replace a channel balance
GUIDE
READ >
How to replace a non-tilt channel balance
How to replace a non-tilt channel balance
GUIDE
READ >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.