Channel Balance for single hung no-tilt window

A quick learner from Maryland says:
November 18, 2017
My channel balance has the number 2830; 9/16" wide & 28 5/8" long.
Please help me identify a replacement. Thank you.
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
November 27, 2017
Thanks for posting. Can you confirm the exact length of the balance? We can custom make a Series 371 channel balance at 28-1/2" long, but not 28-5/8". Let me know if that would work. Please also tell me how many you need. Once I know those two details, I will email you a custom balance order link and price quote.

For the top sash guide, please see our 18-124P. This appears to match.
Top Sash Guide Pair, Rollyson
Top Sash Guide Pair, Rollyson
18-124P
$3.92
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