The H-22a was a converted H-22 coke car. The H-22 was originally built with clam shell doors but were converted to saw tooth doors as shop repairs were required. This conversion did not cause a class change so either type of doors could be found at various times. The conversion to class H-22A began in 1923. This conversion replaced the coke slats with solid panels above the belt line and placed the car on 70 ton Crown trucks. Carrying capacity was increased to 140,000 pounds of coke. 3671 H-22A's were converted by 1930. After 1930 the H-22 class cars were scraped instead of any furthur upgrades.

KIT INCLUDES: injection molded plastic body, hopper doors, wine door latches with door bracing, coal load, interior bracing, end mounted brake wheel or top mounted brake wheel, X2f couplers, one piece molded Crown 70 Ton trucks and 33" chilled wheels with RP-25 flanges on brass axles. The model is a prototype Pennsylvania hopper car. The production molds were made using the original PRR drawings as our guide.