Get the best sound quality from your marine setup with Fusions MS-SW10 400-Watt 10 Subwoofer. Sealed basket and motor housing along with a UV-, salt- and fog-resistant construction stand up to harsh marine demands. 400 peak watts deliver a great-sounding bass that wont rattle. Manufacturers three-year warranty. Speaker dia: 10.5. Mounting dia: 8.75. Seating depth: 4.5. Type: Sub-Woofer.