An in-wall speaker using KEF's patented Uni-Q driver array with a very shallow mounting depth.Uni-Q single point sourceUltra-thin bezel and flat magnetic paintable grilleIP64 weather resistantKEF Ci160.2CS In-Wall SpeakerSKU: SP3934ASpecifications Frequency response (±6dB): 52Hz-20kHz Sensitivity: 89 dB Nominal impedance: 8 ohms Recommended amplifier power: 10-100 W Dimensions (H x W x D): 223 x 223 x 90.5 mm Cut-out: 194 x 194 mm Weight: 1.7 kg