Spiral balance and corresponnding pivot shoe

A quick learner from Carlisle PA says:
Need to replace spiral balance and correpsonding pivot shoe. Balance is 29 inches long and approx. 3/8 diameter. Seems to have a white or very light green tip. Pivot measures 1/2 inch thick, 1-1/8 inch wide, and 2 inches long. See attached photos of old balance and pivot shoe. Need help choosing correct replacement parts.

User submitted photos of window hardware.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Looks like you have the S900-29 balance. See if you agree. Now, while the S900 balances normally take our 15-045 shoe, I'm not sure if that's what you have. See our 15-046 shoe instead, since it's a little larger. You will have to remove yours from the window frame to get a good measurement, then compare that to our hardware to confirm whether it will work.
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