Broken balance

Hello,

Take a look at our S170 and S171 coil springs that measure 3/4" wide. The S170 has a short tongue to mount directly to the pivot shoe but the S171 has a longer tongue to wrap around the S170 and connect to the shoe. 

If there are no stamps on your coils, you'll need to weigh your window sash and divide the weight by the number of coils in your window to choose the correct strength option. Thank you!