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 end brackets must be selected. See diagram for reference. End brackets will be attached to balances.