For Structures can 3D units 10 foot length Sold as a pair
Extension Cable with XID - 12-Pin - 10'Extend the cable length of your compatible 12-pin transducer with this 10 foot (3 meter) cable. Supports 12-pin Airmar transducers with XID.
Garmin 010-11617-32 10' Cable Extension 12-Pin XID
Dual 10-ft 12 Pin Transducer Extension Cables, Accessory
Navico 5 Pin Ethernet Cable Joiner (Female to Female) [000-10779-001]
Dual 10-ft 12 Pin Transducer Extension Cables
Lowrance HDS-12 Carbon ROW with HST-WSBL Skimmer Transducer and
Navico Transom Mount Transducer f/StructureScan 3D NAVICO000-12396-001
Navico
Navico Dual Transducer 10 Extension Cable - 12-Pin - f/StructureScan 3 – DirectNine - Europe
Navico Dual Transducer 10' Extension Cable - 12-Pin - F/structurescan 3d : Electronics
Navico Dual Transducer 10' Extension Cable - 12-Pin - f
Lowrance 10EX-BLK 9-pin Extension Cable f/LSS-1 or LSS-2
Dual 10-ft 12 Pin Transducer Extension Cables, Accessory
Garmin Transom Mount Bracket f/Livescope Plus LVS34 [010-13228-04]
Transom Mount Transducer for StructureScan 3D Includes transducer, transom mounting bracket and assembly and mounting screws, washers and nuts.
Navico Transom Mount Transducer f/StructureScan 3D [000-12396-001]