Technical (solved)What’s this called? (glass run channel)

I need some of this stuff but I don’t know what it’s called. I tried many search terms but have not turned up this stuff. What’s it called and where can I get it?
Thanks

 

Gl*** run channel.

 

Thanks
I spent days searching for it

 

Recently there was a tread that concluded that door gl*** is often not as thick as back in the day.
It can have a tendency to rattle in the gl*** run channel.
Try to match the channel to your gl*** thickness.

 

C and G auto parts has universal run channel for sale in their catalog. Fairly reasonable

 

Look for Restoration Specialties. They have them in all sizes, flexible, and rigid.

 

Everyone sells it, my car took the Y619 and Y620 channel (flexible and rigid), I matched it up by measuring what I had left in the trunk. I was able to find 8' lengths, or I would have to buy extra 6' sticks of it. Amazon had it, Metro Gl***, CR Laurence and so on.