Acoustic Audio CS-i43s In Ceiling Square 3-Way Speaker (White) 200 Watts Max and 100 Watts RMS Power Handling 4" Poly Cone with Extended Throw Drive Assembly, Poly Mica Midrange with Butyl Rubber Surround and Soft Dome Tweeter Frequency Response: 55Hz - 20 kHz (+/- 3dB) Efficiency/Sensitivity: 91dB at 1 watt 1 meter Crossover Frequency: 3500 Hz Cutout Size: 6.5" X 6.5" Overall Size: 7.83" X 7.83" Applications include Home Entertainment, In-Wall/Ceiling Speaker, Home Audio Surround Sound, Sunrooms, Atriums, Home Theaters or Cinema Rooms, Patios, Pool Decks, Bathrooms or Kitchens, Offices or Commercial Use