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 A 0.2C (A 0.1F); 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-45, 200 kHz-12; 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. - cis2:mm5mnJlm -Specifications: Mounting Style: Thru-Hull; Box Dimensions: 4"H x 12"W x 16"L WT: 4.6 lbs; UPC: 801769000177; Brochure (pdf)