Coil Balances for two different sized windows

A home owner from NJ says:
I have two different sized windows. Both coils have the 7 marked on them. Is it correct to assume i need the same product for both windows? Item S152-7

Window sizes are:
28 1/2 inch x 17 7/8 inches
and
23 3/4 x 20 1/2 inches

The coil balance shoe for at least one window is broken. Based on the pictures, it looks like Product Code: 15-175?

Thanks
User submitted image of their window hardware.
Profile picture of Tom
Tom from SWISCO responded:
Hello! You have a good eye. I agree, the 15-175 shoe and Series 152 spring look like good matches. If you have a 7 on your spring then the S152-7 is a good bet.
How to Replace a Triple Coil Balance System
How to Replace a Triple Coil Balance System
VIDEO
WATCH >
Removing a Triple Coil Window Balance
Removing a Triple Coil Window 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.