Window balance shoes

A quick learner from Lakeland, Fl says:
I'm sure I have the 19-002 top on my balance. The shoe is a little confusing. Can you tell me what the difference is between the 15-002 and 15-001 shoes? the stamped numbers are 23 3 L 1 Thanks Candie
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Tom from SWISCO responded:
The difference between the 15-001 and 15-002 is in their size. You will need to carefully look over our dimensions and measure your own shoe to determine the proper match.
A home owner from Brooklyn, NY says:
Thanks for taking the time to answer these questions!

So I see from the specs that the 15-001 shoe is 1-1/8" across , and the 15-002 is 1" across. However, the shoe I'm looking to replace is 1-1/6" across
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Tom from SWISCO responded:
My pleasure! I think you have the 15-001. It's pretty common for these to wear down a little from the friction of opening and closing the windows over the years.
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