Anderson Sash Balance 7#27

A home owner from Tiverton RI says:
Hello, I need to order a couple sash balance replacements. The numbers on my current bablance are:

D75 7#27 1-87

Which replacement part should I order?

Thanks Doug
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Paul from SWISCO responded:
Thanks for contacting us, Doug. Please take a look at our 24-737 Andersen Sash Balance, which can be used to replace balances with the stamp 7#27.
A home owner from Pacific Palisades, CA says:
I need to replace the double hung sash balances for my Andersen windows (~ 1983) Product # are 11600-2 and
D25 7#27 4 81. Can you identify the replacement part?
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Tom from SWISCO responded:
Thank you for posting on our discussion board. I have placed you into an existing discussion regarding this operator. As you can see, we have recommended the 24-737 as a replacement for balance boxes with the stamp 7#27.
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