Attwood Drop-In Hidden Horn with Black and White Covers – 11478-7

Ensure reliable audible signaling on your vessel with the Attwood Drop-In Hidden Horn 11478-7, a compact and discreet marine horn designed for clean, flush installation. This drop-in horn mounts below the deck or panel, keeping the horn hidden while still delivering a loud, clear sound for safe boating and signaling.

Supplied with both black and white covers, this horn easily matches a wide range of boat finishes and installations. Built with corrosion-resistant, marine-grade materials, it is designed to withstand harsh marine environments while providing dependable performance season after season.

Ideal for small boats, pontoons, personal watercraft, and recreational vessels, the Attwood hidden horn offers a professional appearance without sacrificing safety or sound output.

Key Performance Features

• Discreet Installation: The "hidden" drop-in design allows the horn unit to be mounted flush or recessed, keeping it out of the way while providing a professional, factory-installed appearance.

• Dual Cover Options: Each unit comes with both black and white grill covers, allowing you to choose the color that best matches your boat's gelcoat or trim.

• ABYC Compliant: This electric horn is designed to meet ABYC standards for power-driven vessels up to 65.6 feet (20 meters) in length, ensuring you stay legal on the water.

• Easy Retrofit: The compact footprint and simple mounting design make it easy to install as an upgrade or a replacement for older, bulkier deck-mounted horns.

Technical Specifications

• Voltage: 12V DC

• Mounting Type: Drop-In / Hidden

• Visibility/Sound: Designed for boats up to 20m (65.6')

• Dimensions: Approximately 5" x 2-3/4" x 1/2" (Faceplate)

• Materials: Durable, corrosion-resistant housing and grills

Summary for the User

The Attwood Drop-In Hidden Horn 11478-7 is a reliable and stylish safety upgrade. Because it includes two cover colors, it is a versatile "all-in-one" kit that fits almost any boat's design. It provides a loud, distinct signal that is essential for navigating busy waterways and emergency situations.

Installation Tip: When installing, ensure the horn is angled slightly downward or has proper drainage to prevent water from pooling inside the sound chamber, which can muffle the tone over time.

Part Number: 11478-7

The Attwood Drop-In Hidden Horn combines clean aesthetics, durable construction, and reliable sound output—making it a smart choice for boaters who want safety without cluttering their deck.