Visaton DL10 8 Ohm, Ceiling Speaker, 8 Ohm, Hi-Fi 4"", Music power rating: -/ 30 Watt, 75 - 20000 Hz, Metal model, UV resistant, Fireproof installation (fire pot) possible, Diaphragm protected against humidity, Outer diameter: 135 mm, Depth of installation: 43 mm, Ceiling cut-out: 110 mm, Weight: 0.4 kg