Replacement insulation for door trim?

[Matthew Jeschke]

I'm rebuilding a Tahoe I bought. The doors need some work so I pulled the trim off. Is it possible to buy the white insulation (or equivalent). Thanks! See pic below:

https://drive.google.com/file/d/1YgQ_j-aJpmdEBuOBbgVspQfWDk-YnV3f/view?usp=sharing