A home owner from Colorado Springs says:
June 5, 2016
Which balance do I need? The code stamped on the broken channel balance is "26 9 JV CMC 7." I measured the length and it's 27 inches for just the channel and 9/16" width. It seems like this is the correct one but I'm unsure of the weight.
Tom from SWISCO responded:
June 6, 2016
I'm afraid I cannot determine what option you need based on your stamp. I recommend weighing your sash on a scale to confirm the correct spring strength.