Lowell Manufacturing Company","iMount® Cylinder-series: (150W) professional speaker system is engineered for flown installations (open ceilings). The ready-to-install system includes a speaker, enclosure and grille; some models also include a transformer. System ships with a steel cover plate over the speaker for jobsite protection during installation. Performance: professional, high-performance sound for entertainment venues, convention centers, hotels, restaurants, educational facilities, arenas, airport terminals and house of worship applications. Speaker size: 8\" or 12