Denver & Rio Grande Western Rolling Stock Photographic Roster
Reporting Marks: DRGW Cars Numbered 50800 - 50899
AAR Class:
RB: Bunkerless refrigerator car with or without ventilating devices and with or without device for attaching portable heaters. Constructed with insulation in side ends, floor and roof to meet maximum UA factor requirement of 250 BTU/F/Hour for 50 foot cars and 300 BTU/F/Hour for 60 foot cars. Effective for cars ordered new after March 1, 1984.
