This in-hull or pocket mounted transducer uses narrow beams at low/high frequencies to display depth and temperature data to your Garmin Marine Network via your sonar, such as the GSD 26. Designed to allow both traditional and Spread Spectrum scanning, this 2 kW barewire, plastic transducer has a maximum depth of 8,000 ft; an operating frequency of 38 to 75 kHz and 130 to 210 kHz; and a beamwidth of 10x19 degrees. The in-hull mounts on a 0-25 deadrise angle; the pocket mount is installation dependent. Transducer kit comes with installation instructions. Follow the instructions carefully to avoid damaging your boat. ¹In-hull not recommended for cored-hull vessels