Constant Force Window Balance with Single 7 or 740 Coil Spring

Constant force window balance for vinyl windows are also known as coil balance or coil spring balance. There is a number printed on the stainless steel coil spring that determines the weight of the sash. A Jamb Stretcher is a tool that is available for the professional that makes it fast and easy to spread the jamb to remove and install new constant force balances on many windows.|Coil spring is made of stainless steel|Housing is made of plastic|There are many variations of this type of balance|Replace other accessories when replacing the balance for best operation