Window Balance Stamp Option

A quick learner from Florida says:
Your site shows Stamp Options 2810, 2820, 2830, 2840, 2850, 2860. The balance from my window has 28C stamped on it. Does that correspond to 2830 or what?

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Paul from SWISCO responded:
Hey, Jim. Yes, a 28C stamp usually corresponds to our 2830 option. However, if you want to be 100% sure, you can always weigh your sash and refer to the chart we show on the S380-29 store page.
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