B117 Traditional/CW Thru-Hull 50/200kHz, 600W, Transducer, 9-Pin, DT for Simrad, Lowrance & B & GThe B117 features a 50/200 kHz, dual-frequency, single, ceramic element in a low-profile bronze housing. The nearly-flush design minimizes drag with only 5 mm (3/16") extending outside of the hull. Features: Depth only or depth and temperature; 600 W; Dual-frequency element: 50 kHz with a wide 45 beamwidth for performance to 353 m (1,200'), 200 kHz with a 12 beamwidth for performance to 206 m (700'); Right-angle cable exit saves space and protects the transducer if stepped on; Included rubber washer allows tightening of the hull nut to irregular hull surfaces; Low-profile, bronze housing has minimal drag; Plastic P319 and stainless steel SS60 models are also available to accommodate all hull materials and deadrise angles; Specifications: Weight: 0.9 kg (2.0 lb.); Recommended Boat Length: Up to 8 m (25'); Hull Material: Fiberglass or wood; Hull Deadrise: Best performance through 7. Can accommodate up to 12.; Acoustic Window: Urethane; Hole Diameter: 51 mm (2"); This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. - cis2:mm5mnJlm -Brochure (pdf)