Schmitt Marine Mini Stainless Steel Dual Drop-In Horn w/Stainless Steel Grills High Low Pitch [10055]Mini Stainless Steel Dual Drop In Horn with Stainless Steel Grills High & Low Pitch Features: All Stainless Steel Inside & Out 304 Stainless Steel inside and out including a sealed sound unit No rust Guaranteed for 5 years. All meet ABYC A 23 for boats up to 12 meters Pre wired It fits existing hole patterns Specifications: 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)