Garmin GT17M-THF 20 Degree Thru-Hull Transducer is engineered for reduced drag and optimal sonar performance on fishing and cruising boats. This flush-mounted, 1 kW midband CHIRP (80–165 kHz) transducer clearly defines fish arches, structure and bottom depth returns. It offers maximum depth performance of 730 meters in freshwater and 550 meters in saltwater. The transducer operates with a beamwidth range of 9 to 18 degrees and features fast-response water temperature sensing. The thru-hull design supports flush installation with 0-, 12- or 20-degree tilt options. Auto-ID enables easy plug-and-play operation. This transducer includes a 15-meter cable, supports depth, speed and temperature readings and is compatible with Rapid Return sonar. Its stainless steel housing ensures long-lasting durability and is suitable for hull deadrise angles from 0 to 24 degrees.