Jasmine from SWISCO responded:
August 11, 2023
Thanks for posting! It looks like you have either the S380-15 with a 1" shoe or the S385-15 with a 1-3/32" shoe. The metal channel of these balances is 15". To determine which series is needed for your window, look over the dimensions from the diagram below to confirm the depth of your bottom shoe. Let me know if it does not match either measurement. You'll need to select the 1430 stamp. Comparison of the S380 and S385 balance shoes.
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