AFI Mini Hidden Boat Horn with Bracket AFI brings the mini hidden boat horn with bracket, a durable boat horn that looks good on any vessel. Critical components suich as the trumpets, motor cover, diaphragms, assembly and mounting hardware are all made from stainless steel to hold up to harsh marine environments. Product Features Type 304 Stainless steel diaphragm Dimensions 3 14W x 1 34H x 3L Maximum amp draw 3 amps dBA rating 105 at one meter Fundamental frequency 440-20 Includes grill mountin