The TrueLine Trains 40' Boxcar-Conversion Wood Chip Hopper-Gondola is based on old 40' boxcars converted into wood chip gondolas, also referred to as hoppers. For many years, the 40' boxcar was the most common type of car in Canadian National Railways' freight car fleet. Most of them were constructed with six foot doors by various manufacturers. The cars first hit the rails in the early 1960s and most were off the roster by 1990, although Ontario Northland's fleet lasted a little longer. This model of the car was one of the common conversion methods where the railroad would cut the roof off of the car, add roof braces and 24" high side extensions, and simply weld the existing 6' doors closed. This HO Scale Boxcar-Conversion Wood Chip Gondola model features fine detailing, applied grab iron details, metal wheels and magnetic knuckle couplers.