B45-DT-HB 600W Thru-Hull Transducer w/Fairing Block & Humminbird #9 ConnectorThe B45 is our smallest and most economical, dual-frequency, bronze, stem transducer. Its streamlined shape and High Performance fairing block deflects aerated water from the transducer&';s face for strong return echoes and clear display images. Features: Bronze housing Depth and Temperature Recommended for planing-hull powerboats and cruising sailboats up to 9 m (30&';) Good sensitivity in a compact housing Fast-response water-temperature sensor provides 0.2AdegC ( 0.1AdegF) High-Performance Fairing included Usable Shaft Length: 92 mm (3.62") Standard fairing block Frequency: 50/200 kHz Maximum Depth Range: 50 kHz-235 m to 353 m (800&'; to 1,200&';) 200 kHz-118 m to 206 m (400&'; to 700&';) Cone: 50 kHz-45Adeg, 200 kHz-12Adeg RMS Power: 600 W 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 Box Dimensions: 4"H x 12"W x 16"L WT: 4.6 lbs UPC: 801769000177 Brochure (pdf)