SWISCO - The Replacement Hardware Authority

S351-29 "option"

A home owner from florida says:
I want to order 4 new S351-29s but am not sure about the "option".
My current model has the marking: 28 2 H1

I measured the item and compared to your pictures to determine the model on your site. I just dont know what 'option' to choose.
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Tom from SWISCO responded:
Thanks for posting. Based on your stamp, I'd recommend the 2820 option. As you can see on the chart on the S351-29's description, this can carry a window sash weight range of 12 through 16 pounds. Does your sash's weight fall within that range?

Please keep in mind that the weight range information is based on 2 balances per sash. Balances are designed assuming friction in the jamb weather-strip will carry a portion of the sash weight. Suggested sash weights are approximate.
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