Numbers on the parts

A handy person from Missouri says:
May 26, 2020
1420, 2230
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Casey from SWISCO responded:
May 29, 2020

Hello,

Take a look at the S350-15 and S350-23 channel balances. The stamp numbers you've provided will be your spring strength options for your replacement balances. Take a look and please let us know if you need anything else. Thank you!
15" Series 350 Channel Balance
15" Series 350 Channel Balance
S350-15
$9.34
23" Series 350 Channel Balance
23" Series 350 Channel Balance
S350-23
$9.91
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