32" Series 350 Channel Balance sash weight

A handy person from Thousand Oaks CA says:
Could you please give me the information for my order of S350-32, I need to order two different sashes weights is your weight definition in 3110,3120,3130,3140 which one is for light and the heavier sashes?
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Donna from SWISCO responded:
Please remove the window sash and place it on a scale. The weight of the window sash in pounds is needed to determine the proper stamp option.

Stamp option 3110 will carry a window sash weight range of 7 through 12 pounds.
Stamp option 3120 will carry a window sash weight range of 12 through 16 pounds.
Stamp option 3130 will carry a window sash weight range of 16 through 23 pounds.
Stamp option 3140 will carry a window sash weight range of 23 through 28 pounds.

This 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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