Sash balancer

A handy person from Thayne, WY says:
May 17, 2022
Need to replace both sash balancers. Don't know where to fins this?
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Emily from SWISCO responded:
May 18, 2022

Hello!

Your balance appears to be a match for our S770-31 with the 31B spring strength option. This balance often uses the 15-129 but you'll need to remove yours from the window to confirm this matches what you have now. 
Pivot Shoe, 9/16" Thick
Pivot Shoe, 9/16" Thick
15-129
$2.50
31" Series 770 Balance
31" Series 770 Balance
S770-31
$13.12
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