This thru-hull version requires a permanent hull penetration (with the appropriate fairing block for the boat's deadrise), an installation typically chosen by owners of larger or faster-hulled boats where a transom-mount transducer isn't practical. It includes built-in AHRS (Attitude Heading Reference System) stabilisation, which keeps the live sonar image steady even as the boat pitches and rolls in chop. It requires the GLS 10 sonar black box to interface with a compatible chartplotter, and works with Garmin's ECHOMAP Plus/UHD/Ultra and GPSMAP 7/8/9-series displays. As a replacement part, this is intended for an owner whose existing LVS32-TH transducer needs swapping out - a direct, form-fit-function replacement for the original unit rather than a new system purchase requiring the GLS 10 module or mounting hardware again. Because it's a direct replacement part, no re-fairing or new hull work is needed - it fits the same thru-hull opening and fairing block already installed for the original unit.