N Scale Great Northern - Rd#18337 These 40’ standard box cars with plug & sliding door are synthetic red with white lettering and run on Bettendorf trucks. Built in 1963 as part of series 111000-111499 these cars were used by many railroads to transport oversized freight or finished lumber which required double door cars like these to make loading and unloading easier. The plug door allowed for freight to be stacked against it when sealed, unlike sliding doors, allowing for increased capacity.