Garmin Replacement Fairing Block f/GT56 Thru-Hull Transducers [010-12224-03]Replacement Fairing Block for GT56 Thru Hull Transducers Use our fairing block to position your GT56 series of thru hull scanning transducers parallel to the water line for increased sonar accuracy. If the deadrise angle of your mounting location exceeds 5 degrees, you should use a fairing block to mount the device.
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