Replacement Coil Balanse for a Window

A handy person from Boston, Massacusetts says:
Hi, I need help identifying the attached window coil balance. I want to replace them as they are no longer working for the window.

User submitted photos of a coil window balance.
Profile picture of Tom
Tom from SWISCO responded:
That shoe looks a lot like our 15-155. Please carefully compare them and let me know if they match up. If so, you may also want to see our Series 170 and Series 171 coil springs, 15-156 spring cover, and 15-157 support drum.
A quick learner from Boston Ma says:
Thanks for the response. I was able to take the coil out of the casing. Attached are the new pics.
User submitted photos of window hardware.
Profile picture of Tom
Tom from SWISCO responded:
Ah, I see. I'm glad you removed it from the window, because I was wrong before! Now that I see the hardware clearly, I recommend our 15-177 and Series 152 spring. Again, please compare the specs we show online to your own hardware to ensure that they match up.
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)