Paul from SWISCO responded:
December 13, 2019
Thanks for writing in. Looks like you have a Series 600 Spiral Balance for tilt windows. These older spiral balances have a white plastic covering; note that our Series 600 will have a metal casing. Our Series 600 balance does not come in green tip and I suspect your balance's tip color was has simply has faded from time. Our S600-30 Black Tip balance will support a window sash in the weight range of 31 through 40 lbs, and thus support a window sash that weighs exactly 35 lbs. |