Service door for a motor vehicle

A service door assembly (10) for a recreational vehicle including a sidewall defining an opening, the sidewall including an inner panel, an outer panel and a cavity therebetween filled with an insulation material. The service door assembly (10) includes a door frame (18) and a door (16). The door frame (18) is adapted to be disposed in the opening. The door is mounted to the door frame. The door (16) includes an inner member and an outer member connected with a securing arrangement including one or more teeth. The frame similarly includes an inner member and an outer member with a securing arrangement having one or more teeth.