Plexiglass front and back windows
are no problem. Itís the glass windows that open that can get complicated.
Buy the plexiglass anywhere- use the old window as a template to cut to size. The gasket can be ordered online or through a glass shop. If youíre replacing the gasket, go ahead and replace the plexiglass at the same time. Itís not worth the trouble to try to save a cloudy or scratched window. The cost is mostly in the labor, yours or someone elseís. The parts are cheap.
Plastic stuff like fill spout for the water tank, electric cord port... is common RV stock.