The long-lasting low power draw of this LED replacement light won't drain the boat's battery, and the durable marine light is impervious to water spray, wash-downs, and pounding wake. For use with Taco's LED T-Top tube light (item #921015). Efficient 100,000 hours of operation. Impact-resistant polycarbonate lens. Light tube and connection sealed. 20"L x 1.5"W.