Ceramic Metal Halide (CMH) round or flat back cylinder with integral ballast. Utilizes electronic metal halide ballast designed for use with higher CRI Index MasterColor (or equivalent) PAR metal halide light sources. Phenolic baffle finishes appearance and reduces glare from the interior of the housing. Cylinder accepts accessories such as Nora louver or barn door attachments, as well as color filters (by others) to provide flexibility in designing for greater control or special effects. It is one/two circuit track compatible. Accepts filters, louver, or barn doors.