507 00 632 Union Pacific, Spur Z

507 00 632 Union Pacific Z Scale These 50 Standard box cars with plug door are painted yellow with aluminum roof and black ends. Built in 1940 at U.Ps Omaha shop as part of series 499000-499299, they run on Bettendorf trucks. Used to ship shorter distances than mechanical reefers, these cars featured single plug doors to help seal in pre-cooled merchandise.