LOT 2 Assembly required. The N Scale Roundhouse 8603 4' 3-Bay Ribbed Side Hopper Rio Grande D&R G W 18 505 with Box is a highly detailed and realistic model train freight car. Made of plastic in a vibrant red color, this N gauge side hopper is perfect for collectors and model railroading enthusiasts. The Roundhouse brand ensures quality and accuracy in replicating the classic design of this freight car. With its three bays and ribbed sides, this model is sure to enhance any model railroads and trains layout.