Paul from SWISCO responded:
April 11, 2014
The red tip may work for you, yes, but I cannot say for sure. You should weigh your window sash just to be sure. Two S900-27 spiral balances with Red Tips can support a window sash weight range of 10 through 22 pounds. Does your sash's weight fall within that range? If not, we can work on something better suited to your window.
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