Help Determining Balance Replacement

A handy person from Miami, Fl says:
Please help with determining Part for Replacement Balance(s):

29 3 HT CMC 4 is stamped on the balance, and you'll see the top and foot don't look exactly like those you sell. I purchased some KITCO 18-166 top sash guides to go with the windows on which these balances go.

Thank you for your very specialized and highly sought-after experience!

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Casey from SWISCO responded:

With this combination of attachments, you could have either an S380-30 or S385-30 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment. You'll also need 2930 spring strength options for your replacement balances.

Thank you and let us know if you have any other questions or concerns.

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