Trying to fix a window balance issue...but it may have been this thing all along.
What is it? This window has a 2740 balance.
Thanks
Tom from SWISCO responded:
April 17, 2020
Hello! Based on these photos, I recommend our 18-174 top sash guide. I think you'll agree that this matches your style very closely. Look it over and let me know if you had any questions.