High Performance! Simple tank installation - just lay it on the bottom. Safe for rubber lined and plastic ponds. Includes liner friendly neoprene bumper. Easy-to-clean, transport to any tank. Total Electrical Insulation Polyseal Barrier prevents water from entering Heater Body Includes Thermostat Controller with Temperature Probe Digital Thermostat goes from minus 30F to plus 220F Thermal Safety Shutoff System standard Includes Flexi Float low liquid shut off Comes with 20' watertight cable and plug Runs on Standard 120 Volt Power In Stock-Ships Fast