Jasmine from SWISCO responded:
March 27, 2023
Thanks for posting! Your channel balance looks a lot like our S380-37 or S385-37 with a 3630 stamp. Which is rated to carry a window weighing 18 to 23lbs. To determine which series you need for your replacements, you'll need to confirm the depth of your bottom shoe. Take a look at the image below for reference. Let me know if your shoe is neither 1" or 1-1/32". Comparison of the S380 and S385 balance shoes.
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