OSD Audio IW680 6.5-inch Polypropylene In-Wall Speaker Pair Woofer: 6.5-Inch Carbon filled Polypropylene Tweeter: 1-Inch pivoting silk dome tweeter Power handling: 150W, Impedance: 8 Ohms Frequency Response 38Hz - 20kHz, Sensitivity: 90db Cut Out Dimension:7 5/8-Inch x 10 13/16-Inch, Unit Dimension: 8 5/8-Inch x 12-Inch x 3 3/8-Inch Shipping: This item does not ship outside the U.S