Available Items


O Gauge RailKing 50’ Double Door Plugged Boxcar
  • Northern Pacific


O Gauge RailKing 50’ Double Door Plugged Boxcar
  • Pennsylvania


O Gauge RailKing 50’ Double Door Plugged Boxcar
  • Safety Kleen


O Gauge RailKing 50’ Double Door Plugged Boxcar
  • Tropicana

2022 RailKing O Gauge 50’ Double Door Plugged Boxcars Announced

January 18, 2022 - M.T.H. Electric Trains will be releasing the RailKing O Gauge 50’ Double Door Plugged Boxcar in four select liveries in 2022. Each of these unique schemes will be available in limited production quantities and will begin shipping to M.T.H. Authorized Retailers in April 2022.

While usually referred to as an insulated boxcar, the prototype for this car, according to the Association of American Railroads (AAR), is technically a bunkerless refrigerator car, class RBL. Built by Evans Products Company at Blue Island, Illinois from 1969-1977, these cars were designed for shipments that need protection from temperature extremes but do not require refrigeration. They have hardwood floors and at least 3” of insulation in their sides, ends and roofs. Produce is a common cargo. The cars’ length and wide 16’ door openings have also made them popular with plywood and lumber shippers.

In contrast with typical sliding doors, the plug doors on these cars are pulled into the door opening when the door is latched. This produces a nearly watertight and airtight seal, protecting the load and helping to keep a more constant inside temperature. A cushioned underframe also helps protect the load from shock, hence the “DF” (for “damage free”) logo found on some of these cars.

Evans Products built nearly 4.400 of these cars, selling or leasing them to a large number of North American railroads and private owners. Although the last of these cars are nearing the end of their allowable 40-year service life, they can still be found in U.S. freight trains today.

Check out each of the schemes in the list on the left.



In addition to the M.T.H. releases, you can find all the 2022 Custom Run models of the RailKing 50’ Double Door Plugged Box Cars that M.T.H. is producing for M.T.H. Authorized Retailers by going HERE.

Product Features

  • Intricately Detailed, Durable ABS Body
  • Stamped Metal Floors
  • Metal Wheels and Axles
  • Die-Cast 4-Wheel Trucks
  • Fast-Angle Wheel Sets
  • Needle-Point Axles
  • (2) Operating Die-Cast Metal Couplers
  • Detailed Brake Wheel
  • Sliding Car Doors
  • Near-Scale Proportions
  • Unit Measures: 13” x 2 1/2” x 3 1/2”
  • Operates On O-31 Curves