Raymarine SS175M Stainless Steel Low Profile 1000W D/T Thru-Hull Transducer 20-Degree AngleThe SS175s provide uncompromised 1kW CHIRP performance in several tilted element thru hull configurations. Ideal for trailerable boats, these low profile transducers can sit on trailer rollers bunks without damage. Given their flush design, low profile transducers may be more easily subjected to surface aeration at higher speeds. Details Max Depth (Ft): 1,500 (M) Frequency (KHz): 80 130 (M) Beam Width: 24 16 Degrees (M)