Anderson window balance
A quick learner from Rhode Island says:
August 19, 2015
I need to replace my window balances. The balances I have were purchased over 30 years ago and have the following number: B23 4P1947. B and 4P19 are larger than the other digits and numbers.
Paul from SWISCO responded:
August 20, 2015
Thank you for the clear information! Yes, if "4P19" is displayed prominently, then I recommend our 24-431 Andersen sash balance.