Need to buy some channel balance replacement

A quick learner from CA says:
Hi,

I need to buy channel balance replacement to fix some of my windows, I took some photos for a one I removed, please see uploads. It has 2730 BSI on it.

Please send me the link for the correct part so I can make purchase. Thanks!

Martie
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Emily from SWISCO responded:

Hi there!

Your balance appears to be a match for our S380-28 or S385-28 channel balance. These two parts may look the same at first glance but you'll notice the Series 380 has a 1" deep shoe and the Series 385 has a 1-3/32" deep shoe. Measure as shown in the image below to determine the best match. You'll also need the 2730 strength option.

Comparison of the S380 and S385 balance shoes.
Comparison of the S380 and S385 balance shoes.
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