Deluxe All-Stainless Shorty Dual Trumpet Horn - 12VFeatures:304 Stainless Steel inside and out including a sealed sound unitNo rustGuaranteed for 5 yearsAll meet ABYC A-23 for boats up to 12 metersPre-wiredIt fits existing hole patternsSpecifications:Dimensions: 16"L, 7-1/2"W, 4"H (40.5 x 19 x 10 cm)Max Amp Draw: 7 AmpsRating: 120 db@ 1 Meter