Abstract: A cover of double bed size is hinged on one side of a pickup truck to form a bed beyond the side of the truck. Pivotal legs on the opposite side of the cover are equipped with latches to latch the cover closed. A pivot arm for the rear leg forms an air scoop for pressurizing the storage space under the closed cover to keep out dust in travelling. The cover is opened and closed by a hand crank windlass, by an electric or hydraulic winch and cable or by a hydraulic cylinder.