Lowrance Structure Scan Stainless Steel Transducers (Pair) Includes port StructureScan HD transducer, starboard StructureScan HD transducer, two fairing blocks, plus a "Y" cable and two isolator kits, which are recommended when installing on an aluminium boat hull. July 2014: Effective immediately, Navico is transitioning from bronze to stainless-steel construction for its StructureScan™ HD thru-hull transducers. The transition from bronze to stainless allows for installation on fiberglass, wood and, now, metal hulls. Pricing, performance, form and fit are the same as the bronze transducers being replaced. Pair Requirements
For boats with a dead rise greater than 24 degrees, the pair configuration is required. Two single transducers will not work for this install. | 
