The windshield used in RV coaches in not made by the coach manufacturer. There are numerous "standard" windshields that are used by several different manufacturers for different types of vehicles.
When I called RV Glass Solutions, they asked for the number down in the corner and whether or not the windshield was tinted or not. From that number and the info on my insurance company, they handled everything. In about a week RV Glass Solutions called me to schedule an installation. When they showed up it took about 45 mintues to remove the old one and install the new windshield.
Since I live in Florida, windshield replacement is ZERO deductible so my out of pocket expense was zip. Basically all I had to do was call RV Glass Solutions, give them the number of the windshield, and they handled everything from then on.