Control 8138 - Ceiling loudspeaker, 8", 90° radiation, 70/100 Volt, power steps at 100 Volt: 6/3/1.5 Watt, 97 dB SPL (1W/1m), without cabinet, masterpack 4 pieces, unit price, optional accessories: MTC-81BB8 metal cabinet and MTC-81TB8 metal mounting