JR-400HLP-T comes with our JR-400 Swivel Mount Top already installed with a HLP Plate and Hardware.
Must use JR-300B push button style mounting base (sold separately).
Simply locate your Unit's base onto the plate and drill hole pattern accordingly.
Smaller Humminbird Models like PiranhaMAX, can be drilled and reverse bolted from underside to match electronic hole pattern. (Nuts and washers exposed.)
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