BRONZE THRU-HULL MT. TRANSDUCER •Airmar B619 •Depth & Temp. (20º Tilt) •Excellent choice for fiberglass & wood hulls this 8-pin 500W transducer has a depth of 900'; operating frequency of 77/200 kHz; beamwidth of 45/15º and a 8 to 15º deadrise (•NOTE: Do not use on metal hulls. When using w/echo series a transducer adapter cable is required)