Help Finding Balance 24B

A quick learner from Sunnyvale says:
August 27, 2019
This seems to be an odd size, very thin! It fits in a Storm Door which has glass that slides up and down like a window. Please help identify this part. Thank you.
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Bob from SWISCO responded:
September 3, 2019

Thanks for writing in. Ah yes, this looks like a Series 800 Channel Balance. These balances have a metal channel width of just 3/8". See our S800-25. You will need a stamp option of 24B. 
25" Series 800 Channel Balance
25" Series 800 Channel Balance
S800-25
$30.44
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