24V Chrome Plated Dual Trumpet Air HornThe Marinco FullBlast compressor driven air horns are the loudest and most complete line of 24V air horns available. All of our air horns produce sound levels ranging between 120 and 127dB, which means all of our air horns meet the ABYC and NMMA regulations for boats up to 20 meters/66 feet.Features:Non-corrosive Lexan polycarbonate diaphragmIncludes compressor, air tubing, fittings, and hardwareDimensions: 17" L x 7" W x 3.75" HMaximum amp draw: 12 volt: 20 amps, 24 volt: 10 ampsdB rating: 121 at one meter, 1/3 octave bandFundamental frequency 375+/-15Hz, 315+/-15Hz