Garmin Flush Mount Kit f/echo 200, 500c & 550cFlush Mount Kit for echo 200, 500c & 550c Looking for a sleeker installation for your echo 200, 500c or 550c? A flush mount kit allows you to easily position your device against most flat surfaces in your boat. The kit includes a flush mount gasket, necessary hardware and instructions. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more