S350-22 with 2113 stamp

A handy person from California says:
June 1, 2016
Hi, my current channel balance is stamped 2113. What is the proper stamp with your balances?

Thanks!

Eric
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Tom from SWISCO responded:
June 2, 2016
I'm not sure, that stamp isn't typical for this balance. I recommend weighing your sash on a scale and referring to the chart shown on the S350-22 store page. That will let you know what you have.
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