Frequency Response: 110 Hz - 20 kHz SPL @ 1W/1m: 94 dB Power Taps: 4, 2, 1, 0.5, 0.25 W Dispersion @ 2 kHz (6 dB down): 100° Cone Material & Surround: Treated paper Cones: 8" main cone with secondary high frequency cone Magnet Weight: 10 oz. Connection: Via wire nuts (included in electrical box) Dimensions: 12-7/8" W x 4-3/4" H x 23-3/4" D Product Weight: 10 lb. 70V and 25V Compatible. Plenum-Rated, complies with Requirements of Standard UL-2043.