A conveyor assembly (26) comprises a first frame (50) supporting a first conveyor (28) for feeding material in a first conveying direction. The conveyor assembly (26) also comprises a second frame (60) supporting a second conveyor (30) for feeding material in a second conveying direction parallel to the first conveying direction. The second frame (60) is movable with respect to the first frame (50) along the second conveying direction between a retracted position and an extended position. A side shield (70) is connected to a side of the second frame (60) and shields the second conveyor (30) laterally. An elongate, flexible seal (94) is mounted to the side shield (70), the flexible seal (94) bridging a gap between the side shield (70) and the second frame (60).
