Identify spiral balance

A quick learner from Florida says:
November 29, 2021
It is 9/16" wide by 17" tube with a 3" mounting strap. The window weighs about 9#s. The photo is on a scale in case I missed a measurement. This window is closed in the up position, but I dont believe that matters to the balance, but I don't know for sure. I'll need 2 of them to finish my project. Thanks for the help.
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Casey from SWISCO responded:
December 2, 2021

Hello,

Take a look at the 5/8" diameter S500-17 spiral balances with a red tip option, which is compatible with the 17-012 bracket. Review the specifications of these parts to confirm if they will work for you. Thanks for posting! 
Bracket, #32
Bracket, #32
17-012
$1.20
17" Series 500 Spiral Balance
17" Series 500 Spiral Balance
S500-17
$8.12
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