Great Northern 40' Double Door Boxcar #3175 40' double door boxcars commonly hauled automobiles, furniture and other large loads which could be more easily loaded through the large door openings. Common in the steam era, many soldiered on into the 1960s and beyond in lumber or other service. SKU: 2542432 Dimensions: Length: 10 1/4" Gauge: O Gauge rail line: Great Northern Minimum Radius: O31 Road Number: 3175 Manuals Find the latest manuals in our support section. Replacement Parts Buy any replacement parts in our support section. Contact Contact a service station to fix your product