Garmin Sonar Transom Mount GT15M-IH - 010-12402-00Garmin Sonar Transom Mount GT15M IH 010 12402 00 GT15M IH transducer is ideal for boats that want to install the transducer inside a fiberglass hull and not on the transom where cavitation could cause issues. It can be used with a hull deadrise angle between 0 and 25 degrees and is excellent for boats traveling at high speeds that want to maintain accurate depth readings. The 8 pin transducer with 4 plastic tanks features mid band CHIRP traditional