Channel balance

A quick learner from Florida says:
Stamp 28201 BSI. Length 29 inches
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Emily from SWISCO responded:

Thanks for reaching out to us. Your channel balance matches either our S351-29 or S390-29 but the best match will ultimately depend on the depth of the bottom fitting. I recommend measuring as shown in the image below. You will also need to select the 2820 strength option based on the stamp printed on the metal channel. 

Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.

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