Mounted to your existing transducer board, Boat Zone. Transducer Spray Shields virtually eliminate pesky transducer spray from your boat 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. Transducer Spray Shields are designed to fit any 3.5in x 12in transducer board. Requires a transducer board for installation (not included).