Stainless steel cover and diaphragms resists corrosion. Comes complete with mounting pad and wire harness. 12 volt. Meets U.S.C.G. regulations. Dimensions: 3-1/4″ x 3-11/16″ x 2-3/16″. 120 dB of sound. Uses a 4 amp fuse. Mounting dimensions: Hole to hole: 1-5/8″, Depth: 1-1/2″, Width: 2″.
