FIG. 1 is a perspective view of a vented luminaire having medially disposed enclosure according to the present invention. FIG. 2 is an elevation view of the vented luminaire having medially disposed enclosure illustrated in FIG. 1. FIG. 3 is a top plan view of the vented luminaire having medially disposed enclosure illustrated in FIG. 1; and, FIG. 4 is a bottom plan view of the vented luminaire having medially disposed enclosure illustrated in FIG. 1.