Plastic thru-hull transducers are for large boats and for boats with inboard motors that make typical transom mount transducers ineffective.
They are not recommended for trailered boats as the transducer is not flush with the hull.
Plastic thru-hull transducers require that a hole be drilled in the hull and the shaping of a fairing block. Professional installation is recommended. Suitable for thru-hull installation in fibreglass and alloy hulls. Operates in single or dual beam mode depending on the head unit to which it is attached.
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