Abstract: A rigid cover mountable to the top of a trailer vehicle with means provided for the lifting of the cover from the vehicle and means provided for securing the cover to the vehicle. The cover includes a plurality of interconnected rigid panels which rest atop the peripherally extending upper edge portion of the trailer vehicle. Interlocking channels are fixedly secured to the adjacent ends of the panels extending across the vehicle preventing rain water from entering the enclosure formed by the panels. A plurality of brackets are hingedly mounted to the panels with each bracket having a cable fixedly mounted thereto. The cables allow for the lifting of the panels when the brackets are swung to their upward position whereas the cables secure the panels to the vehicle when the brackets are swung to their downward position.