8" ceiling loudspeaker and 20 W of power. Quick recessed system by springs. 100 V in-line connections for 20, 10, 5, 2.5 and 1.25 W of power. Frequency response of 100 Hz to 15,000 Hz. Sensitivity 93 dB (1 W, 1 m, 1 kHz). Maximum acoustic pressure 112 dB (20 W, 1 m, 1 kHz). Dimensions 90 mm (depth) and 232 mm (diameter). Hole to embed 210 mm. Finished in white RAL 9016 ABS and metal grill.