Garmin GT21-TH - Stainless Steel Thru-Hull DownVu 500 W (CHIRP 260/455 kHz) Traditional 600 W (50/200 kHz) Transducer with Temp (8-pin) (010-01962-10)
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Garmin GT21-TM Transom Mount Transducer, Traditional 600W, 50/200kHz, ClearVü CHIRP 500W, 260 & 455kHz
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