Coil spring counter balance

Question

I have champion windows, lower sash dimension is    30 inch wide X 28 inch high.   It appears to be a single coil spring unit.

Casey · Accepted Answer

Hello,

It's tough to be sure with your hardware still installed but your pivot shoe resembles the 15-177, which uses the S152 coil springs. See the measurements below to confirm. We've also related a few videos on this page to assist you. Thanks for posting!

Alternate image for 15-177