![Garmin GMI 20 to GMI 40 Adapter Plate [010-12993-20]](http://roughseasmarine.com/cdn/shop/files/115772XL_650x.jpg?v=1788551258)
Product Details
GMI™ 20 to GMI 40 Adapter Plate
This adapter plate allows you to install a new GMI 40 marine instrument into the existing cutout of a GMI 20 in your dash.
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