In 1974, ACF® built the first box car for Railbox, a subsidiary of the Trailer Train Company. They went on to produce 5,400  50’ cars over the next six years, receiving large orders from Class I railroads, shortlines and box car leasing companies.

These box cars have a 50’ 6” interior length designed to fit slightly larger Plate C dimensions. This yielded a capacity of nearly 5,300 cubic feet. Most of the cars were built with non-cushioned underframes.

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