Garmin B265LM Bronze Thru-Hull Mount Transducer w/Depth & Temperature [010-11647-20]B265LM Bronze Thru Hull Mount Transducer with Depth & Temperature Garmin's best performing 1 kW thru hull transducer, this bare wire mount performs well in deep water and has exceptional bottom and water column detail. This transducer has a depth of 3,000 ft; an operating frequency of 42 to 65 kHz and 85 to 135 kHz; a beamwidth of 16 to 25 degrees and 11 to 16 degrees; and a 0 to 20 degree deadrise. Transducer kit comes with installation instructions.