Fully marinized speakers feature RGB lighting to bring the sound to life. Engineered to withstand sun, salt, sea spray and wash downs, they feature sealed motor structure, UV resistant one-piece cast-polymer baskets, a sealed magnet and rubber surrounds. The polypropylene cone and balanced dome tweeter provide great bass, smooth highs and lots of output. Mounting depth: 3-13/32". Installation size: 6-13/16".