[Carl n Susan]

There should be a label on the inside of the frame which you can't see until you remove it. I used to know the manufacturer's name for the early 200n windows but it eludes me now. Not that it matters as Kinro bought them and Lippert now owns Kinro. I suspect you can call them with the label info and they can set you up.

A glass shop isn't likely to have to have the metal frame and hanging system for the portion that went bye-bye.