Boat builders, there is a simple way to install a flush Transducer in the same location on every vessel. Our molded pocket system forms a recess in the hull. The pocket is sized to accept the B260, SS260, and SS270W. However, it will take other popular models by using an inexpensive insert. Or if no Transducer is being factory installed, you can use a blank insert. Assure predictable sounder performance while letting the customer choose his own Transducer model. B45 hull insert fits into molded hull pocket and allows flush mounting of a B45 Transducer.