2840 Window Balance

A quick learner from Summerfield, FL says:
August 13, 2023
The metal part of this items measures 29" long.
Stamped on one end as 2840 BSI FL.
I anticipate needing 4 of these.
This is my second of two requests to identify my parts.
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Bob from SWISCO responded:
August 13, 2023

Thanks for posting. This channel balance resembles our S395-29. Take a look and see if you concur. For a new stamp option choose 2840. Let me know if you have further questions. 
29" Series 395 Channel Balance
29" Series 395 Channel Balance
S395-29
$10.87
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