Sash balance

A quick learner says:
2130 w is the stamp code on the channel please point me to the correct product thank you
sash balance
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Tom from SWISCO responded:
Does the bottom shoe attachment on your balance match one of the shoes below? If your shoe is 1" and both top and bottom are "wingless" attachments, then you need S351-22. If it measures 1-1/8", you have S390-22. In either case, I'd lean towards a 2130 option, which holds window sashes weighing between 12 and 15 pounds.
Comparison of 15-001 & 15-002
Comparison of 15-001 & 15-002
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