Ceiling speaker with power rating of 6 W (selectable to 3 and 1 W), 100 V line. 4" speaker. Frequency response of 100-15.000 Hz. Sensitivity 92 dB (1 W, 1 m and 1 kHz). Maximum sound pressure level 100 dB (6 W, 1 m and 1 kHz). Surface mounting. Dimensions 207 mm (Ø) x 70 mm (depth). ABS and metallic grille, white colour (RAL 9016).