Series 870 Block and Tackle Rod Balance

Series 870 Block and Tackle Rod Balance Sash Support System for tilt-in sash windows. Using a spring and pulley to raise and lower the sash, the Series 870 balance has a 15-043 terminal clip on the bottom. The cap on top is color coded indicating the spring strength (black cap for window sash widths less than or equal to 36" and white cap for window sash widths greater than 36").
Series 870 Block and Tackle Rod Balance
Choose a balance below
12" 14" 16" 18" 20"
22" 24" 26" 28" 30"
32" 34" 36" 38" 40"