Garmin Plastic Transom Mount TM260
The only 1 kW 8-pin transom mount transducer, it has a depth of 1,800 to 2,500 ft; an operating frequency of 50 to 200 kHz; a beamwidth of 19 to 6 degrees; and mounts on a 2 to 20 degree transom.
Transducer kit comes with installation instructions. Follow the instructions carefully to avoid damaging your boat.
When using with a 6-pin Garmin sounder, a transducer adapter cable is required.