Garmin, Single Beam/Variabl
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                   Standard Differential 50/200 kHz Plastic Transom Mount Transducer (8-pin)
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                   Transom Mount Transducer with Depth & Temperature (Dual Beam)
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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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                   Thru-Hull Dual-Frequency 50/200kHz Transducer
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                   Thru-Hull Dual-Frequency 50/200kHz (B744V) Transducer
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                   Thru-Hull Dual-Frequency 50/200kHz Transducer