Great Northern Scale Round Roof Boxcar #5885 In the early 1930s, Pennsylvania developed a new round roof style of boxcar thatallowed for a taller 10' inner height and increased overall loading volume. By the end of the decade the efficient round roof design was adopted by the AAR and utilized on other railroads. SKU: 6-81828 Dimensions: Length: 11 1/4” Gauge: O Gauge price: 79.99 year: 2014 rail line: Great Northern Minimum Radius: O-31 Scale: Scale Catalog Year: 2014 Road Number: 5885 Die-cast metal sprung trucks and operating couplers Hidden uncoupling tabs Durable plastic frames with separately applied metal underframe details Opening doors 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