The part pictured is a right-side clip that holds a window balance in place. It has these markings on one side of it:
C-A
C-97
And it has an "R" on the other side.
I need right and left side parts. Hope you can help.
Thanks, Cheryl
Tom from SWISCO responded:
August 6, 2021
Hello, Cheryl. This looks like a match for our 18-121 top sash guide. I think this may be just what you were looking for but check it out and let me know if you had any questions. We also sell the 18-120 for the opposite side.