These doors are just like the ones you can get from (HD) Home Depot, and all the parts from there also.
If you have no other publications on your coach that shows you the build up of these items, I'm sure you can find a good instructional manual at (HD) that may include other possible projects you need to tackle in the future.
Just be cognizant that not all construction techniques that apply to regular home projects, apply to RV projects.
Hope that helps
Dan & Loretta, US Army Retired Aero Scout Pilot
2012 Fleetwood Providence 42P Class A/DP
Spartan Chassis, 8.9L Cummins 450HP