Series 600 Spiral Balance
The series 600 sash support system features a spiral tube balance with double pins. This is the most popular spiral tilt balance in the industry, used in aluminum and vinyl tilt-in sash windows. The metal tube has a diameter that will actually measure 9/16" but it is considered 5/8" in the trade. The balance tip is available with red or blue bearings for most lengths. Spiral window balances come fully lubricated and ready to be charged.