window glazing says 1891

Need help locating Snap In bead. This goes on a 50-yr old home and I need to make it for another 20-yr.

The half inch side can be a little wider, this is the side that goes on top of the glass. Please note the 3/16 side has bead that lock in to the aluminum track.

Attach please see a drawing of Vinyl bead #1891 that has no brand. A local glass shop has a 3" sample and does not know where it came from. Item #1891 did fit in the track and it will work on my doors. See if you can find it in silver or gray. I have also attached a picture of the door.

The top part of the bead does not have to be the exact size. The small 3/16" size that has a bead at the bottom is what we need a close fit.