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Garmin Gt21-th Thru Hull Downvu Transducer

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Garmin GT21-TH Thru Hull

Downvu Transducer

Model: 010-01962-10
UPC: 753759152833

Perfect for coastal and offshore fishermen who want traditional sonar and CHIRP ClearVü scanning sonar with a stainless steel stem, this thru-hull mount transducer consistently displays clear and crisp fish arches with superior target separation as well as clear definition of structure below the boat.

The CHIRP ClearVü element has a power rating of 500 W and operating frequencies of 260/455 kHz. The traditional sonar has a power rating of 600 W and operating frequencies of 50/200 kHz. It includes a built-in fast-response temperature sensor. For hull deadrises less than 25 degrees.

GT21-TH includes an 8-pin transducer with stainless steel stem, fairing block, isolation plate and bushings, mounting hardware and installation instructions. Follow the instructions carefully to avoid damaging your boat.

ClearVü CHIRP260 kHz (245-275 kHz) & 455 kHz (445-465 kHz)
Traditional600 W
ClearVü500 W
Traditional 40°/10°
ClearVü2.0°x51° @ 260 kHz and 1.4°x29° @ 455 kHz
Maximum depth
Traditional1,500 ft
ClearVü1,000 ft.
Depth/Speed/TemperatureDepth and Temperature
Number of pins8-pin
Cable length30 ft.
Supported deadrise/Transom anglesUp to 25° deadrise

What's in the Box:
  • 8-pin transducer
  • fairing block
  • isolation plate and bushing
  • Mounting hardware
  • installation instructions

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