Twin Mini Compact Horn Twin Mini Compact Horn features a prewired, sealed sound unit with 304 stainless steel diaphragm and stamped 304 stainless cover. Mounting bracket can be used as a wiring template. A drop-in replacement for many common OEM horns. When installed, horns should point slightly downward to permit water drainage. At 111 decibels and a frequency (Hz) of 490 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 #2577061. 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: Voltage - Input Range (Volts): 12v Color: Stainless Box Dimensions: 3"H x 9"W x 10"L WT: 1.75 lbs UPC: 035514431835 .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%; }