Marinco Drop In Horn - $6.88

This 12-volt, drop-in electric boat horn features a stainless steel diaphragm and sealed sound unit for years of no-fail service. The horn includes mounting screws and Black and White ASA grills to match a variety of boat interiors. A special waterproof fabric ensures that water does not damage the horn. Mounts easily with common hand tools. Installation space requirements: 2"H x 3-3/8"W x 3-1/4"D. Sound level rating: 107dB at one meter. Does not include horn button, 5-amp fuse or wiring. One-year warranty. - $6.88