32 4 FX CMC 7

Hi Marisa. I am confident we can help you replace this channel balance, but that stamp just tells us the strength of the balance, not its identity. To know its identity, we'll need you to remove the balance from the window and show us clear photos of the fittings, or nylon attachments, at either end of the metal channel. The combination of fittings your balance uses will narrow down its identity. See the videos below for details.