Garmin GT30-TM GT30-TM Marine Stereos The insert is designed to

The insert is designed to fit snugly onto the woofer's grille receiver ring

It has a depth of 700 to 1

20 inches for your metric fans)

The tweeter features a Mylar® balanced dome to reproduce crystal clear highs

Garmin GT30-TM GT30-TM Marine Stereos The insert is designed toPerfect for the shallow water fisherman who want CHIRP ClearV and CHIRP SideV scanning sonar, this transom mount transducer consistently displays clear definition of objects, structure and fish below and to each side of the boat. The 20 ft transducer cable with built in fast response temperature sensor has a power rating of 500 W per element (1,500 W total); a depth of 750 ft (ClearV) and 500 ft left and right (SideV); an operating frequency of 455