M 29-3, length 30in

A quick learner from 33076 says:
November 14, 2019
Please let me know what product I should buy based on these pictures.
Part Number= I 29 3
Length= 30inch
Shoe Attached= 7/8 width
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Bob from SWISCO responded:
November 18, 2019

Thanks for writing in. This looks like a S377-30 to me. Your stamp code of I-29-3 likely conforms to our stamp option of 2930, which is for a window sash in the weight range of 16 through 23 lbs. If you are uncertain this is correct, weigh your window sash to be safe. Let us know if you have any other questions.
30" Series 377 Channel Balance
30" Series 377 Channel Balance
S377-30
$11.52
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