SWISCO - The Replacement Hardware Authority

Anderson window balance B24 4P1947 6

A quick learner from Whiteford, MD says:
I have an Anderson balance (we built the house in 1977), code in bottom right corner is B24 4P1947 6. Do you have two replacements?

Thanks!
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Tom from SWISCO responded:
You might want to check out our 24-431 Andersen sash balance. This can replace balance boxes with the stamp 4P19.
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