The 11028XLP is single trumpet electric horn with 100 percent stainless steel exterior and dB(A) rating 118 at one meter. Marinco is the leading supplier of horns to the marine industry, with over fifty years of experience in designing and manufacturing sound devices specifically for use in harsh marine environments. Dimensions of this trumpet electric horn are 16.5" L x 4" W x 4.75" H. This product comes with 5 year warranty.