985 Series Single 3/4Inch Constant Force Coil Balance, Weight 3.5 - 13.5 Inactive The split arm design helps

The split arm design helps ensure proper window movement and secure closure

Often referred to as a "babysitter lock

5 pin Rekeyable Standard

note that right hand cranks are gold

985 Series Single 3/4Inch Constant Force Coil Balance, Weight 3.5 - 13.5 Inactive The split arm design helpsPre Assembled 985 Series Centurion constant force balance assembly with 3 4 inch thick coil spring. The 985 series universal single coil balance with metal spring clip side locking brake fits single hung or double hung vinyl windows with standard 1 1 4 inch wide and 3 4 inch deep pocket. The Centurion 3 4Inch Constant Force balance uses interlocking coil spring balance in Singles, Doubles, Triples and Quads Application: Balance system for vinyl window