Humminbird XP 9 20 T Transducer 710147-1. Your boat's hull must be of single-layer fiberglass construction and be free of trapped air or voids in order for a puck transducer to operate correctly so cored fiberglass metal and wood will not work. This...
Humminbird XP 9 20 T Transducer 710147-1. Your boat's hull must be of single-layer fiberglass construction and be free of trapped air or voids in order for a puck transducer to operate correctly so cored fiberglass metal and wood will not work. This...