part selection window balance

Question

need help identifying the ends for a window balance
width is 1/2"
Numbers printed on old part: 29 4 LV CMC 2
The actual length of the aluminum channel is 30"
The measurement between the 2 plastic ends is 29"
window weight 26 lbs non-tilt window, single hung window

Tom · Accepted Answer

That shoe looks pretty thick. Measure it. Is it the one I'm showing below? If so, for a 30" channel, you're going to need S385-30. For a 26 pound sash, choose option 2940.

Alternate view of 15-004