Anderson Window balance

A home owner from Great Falls, virginia says:
Hi --

I've got Anderson double hung windows. I took off the headpiece to expose the balance and the numbers stamped on the balance are:

D62 8 31 6 86

1600 173

Could you let me know what the replacement part number is?


- Michael
Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting, Michael. Take a look at our 24-837 Andersen Sash Balance. This can be used to replace balance boxes stamped with "8 31."
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