The G Scale USA Trains Tiffany Sumer/Winter Commercial Refrigerator Car # 16159 is a ready-to-go plastic model train car designed for a two-rail system. With an analog control system, this refrigerator car operates on DC power and is perfect for adding detail to a G scale model railroad layout. The brand, USA Trains, is known for producing high-quality model railroads, making this piece a great addition for collectors. one of the roof vents has lose hinge. was that way when I purchased. please look at pictures real good before purchasing! Have any questions please ask. T.Y.