Searching for Caldwell 29 3 eu

A quick learner says:
Caldwell window balance
Length 30?
Width 5/8?
Print info 29 3 EU CMC 2
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Bob from SWISCO responded:

Thanks for writing in. See either our S380-30 or S385-30. The only difference between these two balances is the 'depth' of the bottom nylon fitting, so compare both with your old hardware to see what matches best. You will need a stamp option of 2930. 

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