Taylor Mades D-Icer Thermostats keep your boat free of ice by continuously propelling warmer subsurface water up to the surface. Oil-free motor is safe for the marine environment. Dual internal seals and double-lip shaft seal deliver lasting performance. One-piece shroud protects the propeller from debris. Comes with a 50-ft. oil-resistant power cord. Auto on and off ensure efficient use of electricity. Available: On at 25F/off at 35F On at 30F/off at 40F Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Dock Hardware.