The MA4600 round flush mount speaker is the standard for boaters who want good sound quality in a inexpensive speaker. Plus, the Low Magnetic Field will not interfere with your compass or autopilot. The dual cone speaker features coated internal wiring for long life. Polypropylene Cones and Stainless Steel Grille stand up to the harsh marine environment and heavy duty ABS plastic enclosures ensure great durability. Mounting hardware and cutout template are included.