This Attwood Hidden Horn Kit lets you install a boat horn in a remote location such as below deck, behind the dash, or behind the console. This horn features heavy-duty marine construction so it can withstand the rigors of a marine environment and deliver reliable performance. It meets ABYC standards for boats up to 16.4 feet, and meets USCG standards for boats up to 39.4 feet. It is designed for use with 12-volt DC systems only. It measures 3 inches L x 3 ¼ inches W x 1 ¾ inches D. Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing the highest quality marine products for over 100 years. We deliver safe and reliable lighting, fuel systems, water systems, seating & pedestals, swim ladders, custom upholstery, and general marine accessories that are easy to install and meet regulatory compliance.