The SYSTEM 12 is a complete, UL Listed, shallow depth, lightweight, 2' x 2' ceiling tile replacement loudspeaker system consisting of an 8C5PAX - 8" O.D. dual cone loudspeaker with a 5 oz. magnet and a TBLU - 5W-25/70V transformer. Molded fiber enclosure is 1,412 CID. Steel baffle with standard perforation and four (4) seismic tie-off points. Cable clamp is included. No assembly required.