This plastic in-hull transducer with an adjustable deadrise angle makes installation a snap. The NMEA 2000 100 W transducer has a depth of 500 ft; an operating frequency of 235 kHz; a beamwidth of 6 degrees; and a 0 to 22 degree deadrise. Transducer kit comes with installation instructions. Follow the instructions carefully to avoid damaging your boat. *Not recommended for cored hulls. Maximum fiberglass thickness should be no more than 5/8" thick.