Abstract: An adjustable rolling type boxcar door has a main panel and a telescoping adjustable panel at its bottom for adjusting the overall height of the door to fit a variety of door openings. The adjustable panel is slidably retained between side frames in the main panel by stop blocks mounted along the inside edges of the side frames. The width of the door may be also adjusted by positioning a spark strip either closer or further away from the inside edge of the door opposite the closure mechanism. A pair of double roller, pivotally mounted bogeys are mounted in the adjustable panel and support the door from a door track mounted to the side of a boxcar. The double roller bogeys provide an improved traverse mechanism for supporting the considerable weight of a boxcar door and carrying it across what may be an uneven and rough track.