On30 Scale Wood Side-Door Caboose - Painted Unlettered - Red. Similar in appearance to cabooses that plied the rails of Maine's extensive narrow gauge network, and elsewhere in the United States, the Wood Side-Door Caboose is the perfect ending to your On30 Scale freight consist. Arriving in four attractive paint schemes, the car features opening, sliding doors, and a fully furnished interior with weathered, wood grain-effect flooring.