Abstract: A sectionalized pickup truck box cover composed of a plurality of transverse panels. A first transverse panel is placed on the most forward portion of a pickup truck box. A rear portion of the first panel top surface has a corrugated structure. The forward portion of a second transverse panel is placed over the corrugations to the extent desired by the user so as to assure a completed ensemble of the sectionalized panels that will adequately cover the pickup truck box. The transitional panels are added as needed to accomodate the length of the pickup truck box. Finally, a rear panel having a pivotal wind-spoiler lid or wind spoiler tailpiece is set over the rear end of the box so as to engage the rear portion of the last transition panel, the pickup tailgate is closed and the spoiler lid or spoiler tailpiece is lowered to secure the closed tailgate.