The slim profiled CA 563 and CA 564E ABS Grille Ceiling Loudspeakers comes with an epoxy coated fine metal mesh that easily matches to most ceiling surfaces. Being spring mounted eases installation and improves aesthetics. Both CA 563 and CA 564E come with a 120 mm dynamic full range loudspeaker component, making the unit suitable for a wide range of application, be it voice or music. CA 564E comes readily fitted with an enclosure for installations that call for it. A 6W rated multi-tapping line matching transformer is built into the unit, suitable for use with 100V line systems.