Mounted to your existing transducer board, Boat Zone's Transducer Spray Shields virtually eliminate pesky transducer spray from your boat's transom! The durable marine-grade plastic shield mounts easily with six included screws and offers three channels for transducer cable routing to provide a clean professional look. Boat Zone's Transducer Spray Shields are designed to fit any 3. 5” x 12” transducer board. Requires a transducer board for installation (not included).