Hidden Mount Mini Compact Horn Hidden Mount Mini Compact Horn is constructed of powder coated steel. At 107 decibels and a frequency (Hz) of 440 20A, this horn meets US Coast Guard&';s COLREGS and ABYC standard A-23 for use on vessels under 12m (39&';). 12VDC. NMMA Type Accepted #2577068. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Specifications: Color: Black Voltage - Input Range (Volts): 12v Box Dimensions: 3"H x 6"W x 9"L WT: 0.75 lbs UPC: 035514432085 .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }