Garmin B175L Bronze 20 Degree Thru-Hull Transducer - 1kW, 8-Pin [010-11938-22]Airmar B175L w 20 Tilt 1kW Flush mounted bronze housing protrudes less than 1 4" outside hull and can sit on trailer rollers bunks without damage. Tilted element inside the transducer accommodates all hull deadrises and eliminates the need for a fairing block. Low, medium, and high frequency versions provide maximum flexibility for the choice of frequencies. Excellent for fiberglass and wood hulls. Max Depth 3,000' Suppoarted Deadrise Transom Angles