Paul from SWISCO responded:
September 3, 2019
Many thanks for your correspondence. You need our S770-26 tilt balance. Based on your balance's stamp code, we estimate your sash weight to be about 33 lbs; but I highly recommend you weigh your window sash to confirm this. If the exact weight is indeed 33 lbs, choose stamp option 26F for a sash weighing between 30 through 34 lbs. |