Transducers, Single Beam/Variabl, 4000
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                   Thru-Hull Dual-Frequency 50/200kHz Transducer with Fairing Block
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                   Bronze In-hull Mount Transducer with Depth (8-pin) - Airmar R199
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                   R199, 2kW In-hull Transducer
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                   Plastic Thru-hull Mount Transducer with Depth & Temperature (8-pin) - Airmar R99
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                   R399 Ultra High Performance In-hull Trasnsducer
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                   R299 Ultra High-Performance In-Hull Transducer