3610 Number on Balance Sash Wt. 8-13 lbs Part Number 60-361

3610 Number on Window Balance. 37" Length of Metal Channel Balance. 8-13 lbs Sash Weight. 1/2" x 1/2" Non-tilt window balance.
***Note: Top and bottom balance ends must be ordered separately. We strongly suggest replacing the sash guides on the side of your window as well.