25-4 CMC Hemmed Window Channel Balance 61-254

25-4 Number stamped on window balance.
26" Length of Metal Hemmed channel balance.
Sash weight 20 To 25 lbs.
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.