At the end of World War II railroads ordered large numbers of 50′ AAR boxcars with a standard design that was first widely used in the late 1940s. This design was based on the original 1937 AAR design but was modified in the post-war era to include improved dreadnaught end and diagonal panel roofs with standard or overhanging design. These 50′ boxcars were a common sight on American railroads well into the 1970s and 1980s. Features Details such as separately applied ladders and grab irons Three different side sill styles – straight tabbed and fishbelly 8′ & 9′ Superior or Youngstown doors Fully detailed underframe Free rolling trucks with metal wheelsets Accurate printing and prototypical paint schemes