What is this balance part

A quick learner from USA says:
May 11, 2022
Hi, I have a broken aluminum window and this came off of the side with a string attachment piece. It is 1/2 " wide and 1 " long, but appears to be broken at the bottom. What is it, and can I get another one? Thanks!
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Casey from SWISCO responded:
May 12, 2022

Hello,

Your photos remind me of the 15-209 balance end bracket. Take a look and see how the specifications compare to an intact version of your bracket. Thank you!
Balance End Bracket
Balance End Bracket
15-209
$9.70
Classifying Channel Balance Fittings
Classifying Channel Balance Fittings
GUIDE
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