High performance speakers will withstand exposure to UV rays and salt spray. 6-1/2" polypropylene woofer. Dome tweeter. Interchangeable grilles snap easily into place. Simple bolt-on installation - mounting hardware not included. Mounting hole: 6-1/2" dia. Mounting depth: 2-1/3". Quantity: 2 speakers, 2 white grilles, 2 silver grilles Frequency response: 65 Hz - 20 kHz Maximum wattage: 75 watts | Jensen and Voyager 6.5" 2-Pack High Performance Waterproof Speakers with Interchangeable Face Plates in White