Enclosed trailer side door

I am redoing my enclosed trailer and would like to redo the side door frame.
Does anyone know where to get these trims / extrusions???

 

When you buy a new door, it comes with the frame.

 

Yes. I see Pro-Line sells the white door unit with frame... $399 + freight ($340 freight from Virginia to Pennsylvania!!!)

 

The last time I needed one, I arranged a trip that took me past the place that made my trailer. I picked it up in person. Saved a ton of money.