Balance spring for Traco 240 windows

A handy person from Pompano Beach, FL says:
I'm looking for replacement balance springs for my Traco 240 series windows. They have "17S26" stamped on the part. Do you have this part? They are "impact windows" and I know Traco stopped manufacturing these, so I was hoping there is a crossover number or part.
A customer submitted photo of channel balance attachments.
Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting! The shoe is our 15-004 and the top is our 19-041. We can build a replacement balance for you with these attachments, but I need some more information first. Can you please tell me the weight of your sash? This will help us determine your balance option.
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 4-7 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 856-317-6263 or at