PGT window balance

A handy person from My house says:
May 31, 2022
The overall length is 18 inches. The only markings are 17 2 JW CMC 11
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Casey from SWISCO responded:
June 3, 2022

Hello,

Take a look and compare the specifications of the S395-18 channel balance with a 1720 strength option to your assembly. Thanks for posting! 
18" Series 395 Channel Balance
18" Series 395 Channel Balance
S395-18
$9.34
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