8 non-interlaced glass fiber 8 Ohm driver with long Lasting butyl rubber surround rated at 200 Watts RMS and 400 Watts Max; 25 Hz – 21,000 kHz, 97dB efficiency, ceiling cut out size is 10.375; Equipped with 1 liquid cooled silk dome tweeters with 15 degree swivel mount; Cut out template and full installation instructions included