Stainless Steel Mini Drop-In Dual. 12 Volt Hi & Lo Pitch. Lo Pitch: Dimensions: 3"L, 3-1/4"W, 1-3/4"H (7.5 x 8 x 4.5 cm). Hi Pitch: Dimensions: 3"L, 3-1/4"W, 1-3/4"H (7.5 x 8 x 4.5 cm). Max Amp Draw: 6 Amps.. Grill Dimensions: 4-7/8" x 2-3/8" with 4" hole centers.. Rating: 114 db @ 1 Meter Installed. Stainless Steel Horns. All Stainless Steel Inside & Out. 304 Stainless Steel inside & out including sealed sound unit. No rust. Guaranteed for 5 years.. All meet ABYC A-23 for boats up to 12 meters. Pre-wired. Fits existing hole patterns