High Detail Resolut, Thru Hull
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                   B260 Bronze Through Hull Broadband Transducer
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                   Thru-Hull Mount Dual-Frequency 50/200kHz Transducer with Fairing
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                   Thru-Hull Dual-Frequency 50/200kHz Transducer with Fairing Block
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                   Plastic Thru-hull Mount Transducer with Depth & Temperature (8-pin) - Airmar R99
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                   Broadband Transducer for BSM-2 CHIRP Sounder, 3000W Transmit Power
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                   R309 Ultra High Performance Thru-hull Transducer
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                   Broadband Transducer for BSM-2 CHIRP Sounder, 1000W Transmit Power
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                   R209 Ultra High Performance Thru-hull Transducer