Non tilt window balance channel, 30 in, sash weight 25 pounds
A handy person from Orlando says:
November 29, 2016
Marking on the old balance channel are 29-4 AA CMC 11
Tom from SWISCO responded:
December 1, 2016
I would start by looking at our S385-30 channel balance. Look it over and let me know if you think this would be a good match. I'd also recommend the 2940 option for this balance.