Window balance

A handy person from IL says:
January 2, 2020
Would like some help identify which window balance I need.
1/2" wide
Metal Chanel is 28" long
Has marking 2730z
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Bob from SWISCO responded:
January 3, 2020

Thanks for posting. See our S351-28 or S390-28. The only difference between these two balances is the 'depth' of the bottom nylon shoe, so compare both with your old hardware to see what matches best. You will need a stamp option of 2730. Let me know if you have any other questions.
28" Series 351 Channel Balance
28" Series 351 Channel Balance
S351-28
$10.97
28" Series 390 Channel Balance
28" Series 390 Channel Balance
S390-28
$10.97
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