Replace window balance

A handy person from New york says:
August 20, 2023
Do you know what window balance is the one in the photo? The stamp is 2530. Metal length is 26 inches. And it got top and bottom guide? Do you know which one should I buy? And how much will it cost? Thank you
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Bob from SWISCO responded:
August 20, 2023

Thanks for posting. Does the bottom fitting have side tabs, or what we call wings, while the top fitting lacks them? Please confirm. If so, you have our S350-26. For a stamp option choose 2530. 
26" Series 380 Channel Balance
26" Series 380 Channel Balance
S380-26
$10.55
26" Series 385 Channel Balance
26" Series 385 Channel Balance
S385-26
$10.55
26" Series 350 Channel Balance
26" Series 350 Channel Balance
S350-26
$10.77
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