... 1)8 inch active audio loudspeaker system 2)50W rated power 3)Ceiling Speaker 4)Fidelity Sound 5)Any OEM we can do . 8 inch ... 18000HzLoudspeakerΦ25/208 mmHole DimensionsΦ250mmDimensionsΦ280×145mmWeight2.70kgColorWhite1)8 inch ceiling Speaker. Loudspeaker Diameter is Φ 25/208mm ... Speaker,Active Speaker,Mural Speaker,Microphone,Pendant Speaker,Wireless Speaker,Column Speaker ,Volume Speaker,Volume Control, ...