Channel balance stamped 2290 bsi tg 24

A handy person from Pierre south Dakota says:
April 24, 2016
My channel balance broke and I found all the info on your web site except for the number stamped on the side.
It is a 23" series 350 channel balance with a 2290 bsi tg 24 stamped on the side so I do not know wich spring tension to order.
Thanks for your assistance Bill
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Tom from SWISCO responded:
April 26, 2016
I'm afraid the stamp you have, "2290," uses an old number rating that has fallen out of use. The good news is, one of the standard options for the S350-23 may still work, but you will have to weigh your sash and refer to the chart on the S350-23 store page to confirm which is best.
A handy person from Pierre ad says:
April 26, 2016
Thanks for your help
23" Series 350 Channel Balance
23" Series 350 Channel Balance
S350-23
$9.91
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