Abstract: A cover for an open-bodied truck is movable between retracted and extended positions. A pair of guides are mounted on the side walls of the open body, and a cover assembly includes a plurality of rectangular panels linked to one another and extending across the open body. End portions of the panels are slidably mounted in the guides. A drive mechanism is provided for translating the cover assembly between the retracted and extended positions, and an enclosure is mounted at the forward end of the open body for receiving and storing the cover assembly in its retracted position. The tailgate of the open body is maintained in a closed and locked condition when the cover assembly is in its fully extended position.