JBL-LCT 81C/TM is a full-range ceiling speaker designed to lay into a 600 mm x 600 mm metric suspended grid ceiling with no cutting of ceiling tiles required making for an easy and cost-effective installation with a minimum of mess. The low profile depth of only 103 mm (4.1 in) allows the speaker to fit in locations where deeper loudspeakers do not. This loudspeaker is designed to provide excellent performance for voice reinforcement and light-to-medium music in a wide variety of applications including education classrooms business music systems retail stores music/paging systems airports reception/waiting rooms lounges courtrooms meeting rooms and more.