I have a window missing one of its two Channel Balances.
The pictures are of the remaining channel balance with the descriptions and measurements.
I see some Markings: 23C. B.S.I. PN
From my pictures and from what I see online, it appears I need a 24" Series 390.
Is this correct?
Do I need to order two?
Is the matching Top Sash Guide #18-008 (5/8 inch)?
Thanks for your help
Noreen