3' Snap-In Glazing

need to replace these, not sure of manufacturer. At least 30 years old. any help in correct replacement is greatly appreciated. Thanks, Mark

The curved section is 1/2" the straight section is 5/16" Each edge has a small tab measuring approximately 1/8" Need at least 10 3' sections

Window is aluminum but frame is either plastic or vinyl that has hardened and breaking to pieces. The frame holds the glass panels from falling out. Only label on the window is of the one attached in the pictures.

I didn't take pictures of the glazing installed but hopefully the measurements will help. It looks closest to the 55-163-3 but there are some small differences. Just want to make sure these are what I'm looking for before placing the order. If possible please confirm or advise as to what my best wa ... (cont.)