Walthers 910-46517 HO Scale 50' AAR Single Door Boxcar New York Central NYC 47516 Cralwers The non-directional design allows either

The non-directional design allows either hub to be used on the left or right side

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Walthers 910-46517 HO Scale 50' AAR Single Door Boxcar New York Central NYC 47516 Cralwers The non-directional design allows eitherWalthers 910 46517 HO Scale 50' AAR Single Door Boxcar New York Central NYC 47516 The Association of American Railroads had been trying to set design standards for freight cars starting in the early 20th century. The early designs were not widely embraced. Many railroads preferred their own designs. By the time the 1937 AAR boxcar was introduced, this had begun to change as each new design standard provided higher capacity, lighter, more durable cars.