I had one of my front panels destroyed by a blowout. Dealer was to make total repairs (under warranty) as it took out several different things. He only put on the trim panel.
Before
After
However, the bottom of the trailer is sealed. after i got it home i found this
They did not replace the filler between the finish piece and frame. I called them and got "So sorry, bring it in and we will finish it." Well i looked at the old piece and figured to save $$$ on fuel and reinstalled after flatting it back to shape. Next time i will do the whole job myself.
YMMV
Good luck.