Window Channel Balance Replacement

A home owner from Ellicott City Maryland. says:
March 30, 2015
Dear Swisco.

I am looking a replacement for a 31" long Channel Balance. It is 3/4" wide. It had a 3030 stamped on it. I will need 4.
I am also for a replacement for a 33" long Channel Balance. It is 3/4" wide. It has 3230 painted in blue. I will need 4.
Finally I need a replace for picture 9510. It is 1" and 1/4 long. I will need 2.

Thanks,
Will
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
April 1, 2015
Thanks for posting, Will. Looks like you have Rollyson windows. These windows have used our Series 371 channel balance in the past. Please look it over and let me know if you agree. The metal clip resembles our 16-002.
Take Out Clip
Take Out Clip
16-002
$0.41
31" Series 371 Channel Balance
31" Series 371 Channel Balance
S371-31
$11.52
33" Series 371 Channel Balance
33" Series 371 Channel Balance
S371-33
$11.52
Top Sash Guide Pair, Rollyson
Top Sash Guide Pair, Rollyson
18-124P
$3.92
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