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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.
![Garmin GMI 20 to GMI 40 Adapter Plate [010-12993-20]](http://essenbaymarine.com/cdn/shop/files/115772XL_{width}x.jpg?v=1788564016)
![Garmin GMI 20 to GMI 40 Adapter Plate [010-12993-20]](http://essenbaymarine.com/cdn/shop/files/115772XL_1024x.jpg?v=1788564016)