Hole Size Required - 8" Diameter. The woofer on the speaker is 6.5". The housing of the speaker is 9.5" Round. An 8" hole is required to mount the speaker. See product drawings in the product images. One stereo 2 channel speaker 2-way x 2 in-ceiling with a 6.5" mica polypropylene cone woofer with rubber edge and a 16.5oz magnet delivers clear, distortion-free sound The 2 x 20mm silk dome tweeter produces silky-smooth sound and works great in rooms that only one speaker can be installed., Frequency Response: 69 Hz - 20,000 Hz, Sensitivity: 88+/-2 dB, Impedance: 8 ohms, Crossover: 12dB per octave; Power Handling Capacity: 40-Watts Nominal, 80-Watts Peak x 2 Solid constructed, moisture-resistant speakers can be used in bathrooms, saunas, or under outdoor eaves Not a 3-way speaker, Requires 2 channels (left & right wiring) from A/V receiver to be a single 2 channel stereo speaker. SOLD INDIVIDUALLY, NOT AS A PAIR. The 652S2C Silver Ticket 6.5 inch 2 x 80-Watt 2-Way Stereo In-Ceiling Speaker is a versatile speaker meant for stereo applications The woofer cone is injection-mold mica polypropylene to ensure high-quality, long-lasting sound that will bring movie action and music vocals to life. The high-grade rubber edge allows for true audio accuracy and quality that will last. The 2 x 20mm silk dome tweeters of amazing highs. Included above and beyond competitors is the extra heavy weight, high-strength magnet with its field of energy perfectly tuned with the voice coil - it's all about true efficiency. What does this all mean? - It means you get an excellent speaker that is loud, but not noisy. The speaker will not sound harsh when turned up; it maintains excellent clarity at all volume levels.The accent trim around the edge of the speaker provides a clean appearance so you don't have to be a professional to install it. The flip-lever quick-mount system makes installing the speaker easy and secure. Each box also includes a wall hole cut-out template and paint masks.SOLD INDIVIDUALLY, NOT AS A PAIR. SOLD INDIVIDUALLY, NOT AS A PAIR. Useful Links Instruction Manual PDF Technical Specifications Cone Diameter 6.5" Overall Diameter 9.4" Overall Depth 3.4" In-Wall Depth 2.8" Cutout Diameter 8" Magnet Diameter 4" Magnet Weight 16.5oz Crossover 12 dB per octave; 0/-3/-6 dB Switch Frequency Response 69 Hz - 20 KHz Impedance 8 Ohms Power Handling 40 Watts Nominal, 120 Watts Peak Sensitivity 88+/-2 dB