Feature: 9 Commercial ceiling speaker with transformer. 9 Ideal for school, office, hotel & airport background music system. 9 Rated power output 1.5W-3W-6W at 100V. 9 6″ full range paper driver unit. 9 Line input 100V or 70V. 9 ABS enclosure and metal grille in white. 9 In-ceiling quick installation by spring clip.