white snap-in vinyl glazing bead

Thanks for posting. This shape reminds me of our 55-192 or 55-164. Compare the diagrams below with your old bead and see if one of these might work for you. I am afraid these glazing beads only come in certain lengths: 6' for the 55-164 and 7' for the 55-164. You can trim the necessary length with a pair of heavy-duty scissors. I apologize for any inconvenience.

Profile view of 55-192

Profile diagram of 55-164