Green Bay & Western Single Sheath Boxcar #6144 With their structural bracing exposed on the outside, single-sheathed boxcars provided a flat interior wall for securing the loads. Common from the 1910s into the steam/diesel transition era, these cars offer a distinctive variation in your boxcar fleet. Lionel's cars feature realistic molded in details for added durability and lower costs making it easy to round out a freight train suitable for your steam and diesel locomotives. Two numbers are available for each roadname. SKU: 2642091 Dimensions: Length: 10 1/4â Gauge: O Gauge rail line: Green Bay & Western Minimum Radius: O31 Road Number: 6144 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