This is a channel balance for a Kinco Window built in 1994. The balance has a stamp that reads "24 3 HN CALDWELL". It is 25 inches long and 3/8" wide. I probably need six of these.
Tom from SWISCO responded:
July 11, 2017
It's hard to tell based on these pictures. I think it could be either our S390-25 or S351-25, depending on the depth of the shoe. That is the only difference. Look them over and see what you think.