SWISCO - The Replacement Hardware Authority

sash balance model?

A quick learner from Collegeville, pa says:
I have pulled out an Andersen sash balance and the only markings I can make are:
C6 space 7 space 27 space -106. Not completely sure about the -106
Glass size fits that of a 2846 unit. The window may date to the '60's
What sash balance do you recommend? Thanks for your help.
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Paul from SWISCO responded:
Thank you for contacting us. I recommend that you look at our 24-737 Andersen sash balance, which can be used to replace balance boxes with the stamp 7 27.
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