snap-in glazing replacement

A quick learner from Oklahoma says:
I have just found out what this stuff is even called (the local stores just shrugged and weren't helpful so I had to look online) and almost every window in my house has at least one strip of this that is cracked and falling apart (very brittle) so I need to replace it but don't know which one to order. I'm attaching a couple of photos of a piece that I was able to take off one of the windows. I hope they are good enough to help with the ID. It was hard because it was so brittle that it fell apart easily. :-(
user submitted photo of snap-in
Profile picture of Mike
Mike from SWISCO responded:
Good Morning,

I would start out your research by taking a look at the Swisco 55-120 3' Snap-in and the 55-180 3' Snap-in.
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 4-7 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at 856-317-6263 or at