AFI Drop-In Hidden Boat Horn w Black White Grills The AFI Drop-In Hidden Horn is a compact, easy to install marine horn. This horn mounts from the outside, and includes two grills -white and black- made of high-quality ABS plastic. Although small, this horn is capable of 107db loudness. The liner of this horn is made of weatherproof fabric, which lets sound through, but keeps water out. Prewired for a 12V installation. Space Required 2 H x 3-38 W x 3-14 D Features Simple, drop-in installation S