This K&H Thermo-Pond™ Perfect Climate Deluxe Pond Deicers boast a new and improved cage design safe in all ponds -- they will not damage pond liners, plastic ponds or your fish. Can be transformed from floating to submersible in seconds! Features 12' cord for easy placement virtually anywhere in the pond New and improved cage design is simple to clean and maintain MET Listed for safety 2 Year Warranty Thermostatically Controlled K&H Deluxe Perfect Climate deicers automatically turn on and off as needed to keep water in your pond from freezing over. Will maintain pond temperature just above freezing and cannot be adjusted to higher temperatures. Floating or Submersible To use as a floating deicer, use with float ring attached. For submersible use, unscrew and remove float ring. See attached Product Manual for use instructions if pond is already frozen over. SKU UPC Code Wattage Dimensions Wt 8125 655199081257 250 Watts 6" Diameter x 5" Height 3.5lb 8175 655199081752 750 Watts 6" Diameter x 5" Height 3.5lb 8115 655199081158 1500 Watts 9" Diameter x 5" Height 4lb