B117 Bronze Thru-Hull Transducer w/Humminbird #9 Plug - 7-PinThe B117 features our 50/200 kHz, dual-frequency, single ceramic element in a low-profile housing. The nearly-flush design minimizes drag with only 5mm (3/16") extending outside of the hull. The plastic P319 and stainless steel SS60 models are also available to accommodate all hull materials.Features Industry standard for low-profile transducers Depth and temperature Good target detail in shallow-water at 200 kHz and good deep-water bottom tracking at 50 kHz Right angle cable exit offers low headroom and protection when transducer is stepped on Included rubber washer allows tightening of the hull nut to irregular hull surfaces Housings are ABYC H-27 compliant Optional temperature sensor Bronze transducer housing Boat Size: 8M (25&';) and up Specifications: Weight: Bronze - 0.9 kg (2.0 lb) Hull Deadrise: Up to 8Adeg Acoustic Window: Urethane Hole Diameter: 51mm (2") This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Mounting Style: Thru-Hull Temperature: Yes Quick Guide (pdf)Owner&';s Manual (pdf)Brochure (pdf)