spiral window balance 17" non-tilt

A quick learner from Lake Mary, FL says:
Hello, please see the attached images for spiral window balance 17" non-tilt replacement.

Image 0035 is the best shot I could get of one still installed.

Image 0038 is from one uninstalled.

Image 0861 is top and bottom of uninstalled, and 0863 is width, but I think there is plenty of room for a larger size.

Recommendation?

Thank you, sincerely, Daren

(also, under the "You are a" section to select, how about quick learner, handy, and home owner, one was not enough)
User submitted photos of window hardware.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting. It's hard to tell what the diameter of the tube is. If it's 5/8" or 9/16", then I recommend our S500-17. If it's 3/8", I recommend our S400-17. Check out these balances and see how well they match your hardware.
How to Identify a Replacement Spiral Balance
How to Identify a Replacement Spiral Balance
VIDEO
WATCH >
How to choose the proper spiral balance tip color
How to choose the proper spiral balance tip color
GUIDE
READ >
How to adjust a spiral balance on a non-tilt window
How to adjust a spiral balance on a non-tilt window
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.