Review on Garmin GMI GNX Protective Cover by John Koch

I was concerned about the original cover for my Garmin autopilot controller being so loose but didn't notice at the time and of course disappeared on the first trip with the boat trailer. The top was not on the boat, but the GHC 20 was mounted just behind the windshield. The first replacement I got was ordered from ebay and it turned out to fit the GHC 10 and was a bit smaller but did fit the Garmin Reactor autopilot system. The new one is just as loose as the original and can easily fall off too, so I attached two small silicone closet door bumpers to the bottom of the lid with Velcro and now they snap into place like they should. If you're too loose, it's easy to fix.