6” ceiling mounted false ceiling acoustic diffuser with 6W (100V) transformer. Selectable power 6-3-1.5W. Frequency response 230 Hz - 20000 Hz; Sound pressure: max SPL @1m: 102dB; max SPL @4m: 90dB; sensitivity 94dB; coverage angle: 126°. Ceramic inlet and outlet connectors with thermal protection fuse. Materials: metal; colour: White - RAL 9003. Dimensions: Depth: 91mm; Flush depth: 90mm; Diameter: 220mm; Flush hole: 180 mm. Weight 1.12 kg. EN 54 -24 Certification 1488-CPR-0486/W.