Marinco Compact Deck Horn Black #69-10098 This horn is built to last! The sound unit is totally sealed against weather and spray. The cover is made from long lasting, non-corrosive ASA plastic.The diaphragm, and mounting bracket are made from tough, Type 304 stainless steel. Loud, 106 decibel blast. 1 year warranty. All AFI electric horns are American Boat And Yacht Council (ABYC) approved for vessels up to 12 meters long. Dimensions: 4 3/8'' L x 3 3/8'' W x 2'' H.