The US820C 8" coaxial ceiling speaker is perfect for whole house audio, or as a rear-fill surround speaker for your listening space. The large rubber-edged Kevlar® cone woofer offers an extra low-end punch that is unobtainable from most ceiling speakers and a 1" pivoting silk dome tweeter provides an adjustable and accurate high frequency response. An overdrive protected 12 dB/octave crossover network optimally combines the tweeter and woofer for the smoothest possible audio reproduction. Replacement metal grill #302-446.