window balance replacement 29"

A home owner from CA says:
June 25, 2020
I have Jordan windows installed in 1986. The balance is 29"metal measurement.
"2810" is stamped on metal. No other numbers.
No wings on plastic part
One side is fine. Other side has broken spring and broken black plastic piece.
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Casey from SWISCO responded:
June 29, 2020

Hello,

It looks like you have either our S351-29, with a 15-002 bottom attachment, or S390-29, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. You'll also need to know a 2810 spring strength option for your replacement balances. Thank you!



Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.
29" Series 351 Channel Balance
29" Series 351 Channel Balance
S351-29
$11.10
29" Series 390 Channel Balance
29" Series 390 Channel Balance
S390-29
$11.10
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