Two broken balances

A quick learner from Palm Bay, Fl says:
The balances are 29". They are stamped 28A. The sash weighed 10#. The upper ends that go to clips were broken off and the balances were slid all the way to the bottom of the track. No pieces remained.
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Bob from SWISCO responded:

Thanks for posting. Based on appearance I suspect this is a S370-29 Channel Balance. I'd advise comparing to an undamaged balance, if possible, just to be safe. For the stamp option, choose 2810. Let me know if you have further questions. 

A quick learner from Palm Bay, Fl says:
Got the parts and the window is fixed. Thanks.
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Bob from SWISCO responded:

Glad to hear! Let us know if you ever have any other questions, and many thanks for contacting us. 

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