Cat. No. 162-DP-WHT Perko Fog Horn is aluminum with white baked enamel finish and nylon mouthpiece. Conforms to A.B.Y.C. Standard A-23 and USCG Navigation Rules International & Inland (72 COLREGS) for use on vessels under 5 Meters (16.4’). Not as loud as air horns, but this horn will never run out of gas! A great backup horn, if you do need a noise signal and your air horn runs out, you'll have this manual horn. Dimensions: 12.5” Long; Weight 6oz.