Snap in bezel?

I am unable to find names/numbers. I'm not even sure I have the name of what I'm looking for correct. I think it is a vinyl snap in bezel as it does snap in and feels like it could be vinyl. It snaps around the frame of a window that is then locked into place inside my window sash (my main window). The windows are older Anderson wood casing windows. Not sure if this insert window (possibly called a glazing window or storm window) is of Anderson brand as well. Hoping you have what I am looking for! Thank you so much for helping in any way you can!