Humminbird Humminbird XTH 9 20 P Plastic Thru-Hull Transducer

Package Type:Standard Packaging Product Description Plastic thru-hull transducers are an economical alternative to bronze and work with thinner hulls such as aluminum. Internal steel sleeve provides extra reinforcement. Not for Trailered boats. Professional installation recommended. 30 ft cable and hardware included. This model will work with Matrix 10, 15, 17, 20, 25, 27, 55, 65, 67, 77c, 87c, 97; Piranha 1**, 2**, 3*, 4*, 5*; PiranhaMAX 210*, 215*, 220*, 230pt*; Fishfinder 515, 525, 535, 565, 580, 585c, 595c; 931c, 937c; 323, 343c, 363, 383c; 717, 727, 747c, 757c, 767, 777c, 787c; 917c Amazon.com The Humminbird XTH 9 20 P Plastic Thru-Hull Transducer is an economical alternative to bronze transducers, and works with thinner hulls such as aluminum. Constructed with an internal, steel sleeve that provides extra reinforcement, this thru-hull transducer is not recommended for trailered boats, and Humminbird recommends you have it professionally installed due to the fact that it requires a hole be drilled in...