SWISCO - The Replacement Hardware Authority

Andersen balance box replacement

A handy person from connecticut says:
I have a balance box with the following stamps:
one has : 1600-17 623-3 H34 4084
The other has: 1600-17 623-3 H34 1089

What would be the replacement boxes?

Thanks for your time
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Tom from SWISCO responded:
I recommend that you look at our 24-637. This can replace balance boxes with the stamp 623.
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