On a neighbors '99 Thor/Four Winds-Infinity He could not find a suitable replacement door.
On his, the outer skin was good but the wood frame was dry rotted (wood was just "gone in places.
He went to a smaller RV sales/repair outfit that "built" a new frame and "re-skinned" using his old outer frame & skin.
Everything matched and looks like there never was an issue..
Think he said it cost $300 or so.
Retired truckdriver, Full Timing in a Foretravel.
Escapees of Box Elder, South Dakota
....Whether our shack is moving or parked.. We are still home.