Our PW Excel came with side windows that prop open just enough for ventilation. It's a pain sometimes, as there are no screens and bugs fly right in. Some people make or buy screens. The stock E350 our rig was built on had rear windows that opened but these were fixed in place by PW because of the exhaust hazard. Do you have a Fantastic fan? That helps a whole lot,
Judy & Bud (Judy usually the one talking here)
Darcy the Min Pin
2004 Pleasure-Way Excel TD
California poppies in the background