Single Hung window balance

A quick learner from Florida says:
PGT single hung window balance
Metal channel: 30" long and 9/16" wide
Markings on metal channel: 29 4 IP Caldwell
Please advise which item to purchase
Thank you
Thumbnail of the uploaded file named Top Sideview.jpg
Thumbnail of the uploaded file named Top Rearview.jpg
Thumbnail of the uploaded file named Bottom Sideview.jpg
Thumbnail of the uploaded file named Bottom Rearview.jpg
A quick learner from Florida says:
Also, Bottom fitting is 1 1/8" deep.
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Lauren from SWISCO responded:

Hello, thank you for posting,

Your balance resembles the S395-30 channel balance with a 2940 stamp option. Please review and let us know if you have any additional questions. 

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