Polk Audio DB692 DB+ Series 6"x9" Three-Way Coaxial Speakers with Marine Certification, Black High performance audio upgrade that delivers signature quality sound that goes beyond OEM factory systems Marine certified with IP55 rating (water- and dirt-resistant) and tested for salt-fog, UV and humidity Polypropylene and UV tolerant cone with waterproof inner and outer surrounds Simple drop-in installation for any vehicle including cars, boats, ATVsyou name it Cut out Diameter 5.97" H x 8.8" W Bottom Mount - 3.83" Top Mount - 3.25"