Hi Craig, I have a 2005 Monterey, 4 slides, but a 36'. I also acquired a boo boo on one of my bay doors. Called the "mother ship," Beaver Coach Sales in Bend. They quoted me $20/linear inch (running horizontally) for a new skin, and $27/linear inch (again, horizontally) for the whole door, frame and all. That obviously doesn't include the paint. job. I didn't ask about availability because we have a friend who is a metal fabricator who will form the skin for us - we'll then worry about painting it later. Hope this helps
Jim Nichols
Napa, CA
707-217-0903
oneguyinlabor@gmail.com