27-3 CMC Hemmed Window Channel Balance 61-273

27-3 Number stamped on window balance.
28" Length of Metal Hemmed channel balance.
Sash weight 13 To 20 lbs.
1/2" Caldwell 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.