K-380 Air Horn is designed for boats between 25 and 45 feet in length. The K-380 is made entirely of chrome plated cast and spun brass with bronze sounding diaphragms.

The Kahlenberg Model S-0A Air Horn is specifically designed for marine vessels less than 65ft. in length.

The Kahlenberg Model D-0A Air Horn is specifically designed for marine vessels less than 65ft. in length.

The Kahlenberg Model T-0A Air Horn is specifically designed for marine vessels less than 65ft. in length.