dual spring balance

Question

My window is a mi window dual spring balance. I can't find a number on either the clip or the springs. The window is 30 by 30

Paul · Accepted Answer

We estimate your sash weight to be 24 lbs., but you can veryify that by weighing it on a bathroom scale.

If I'm right, you will need four S190-640 coil springs to go with the 15-180 pivot shoe, 15-181 double dent coil spring housing and 15-182 coil springs bushings.