Farm Innovators Model PS-200 Pond De-Icer Heated Saucer, 200-Watt Thermostatically Controlled Pond De-Icer Maintains A Vent Hole In The Ice To Allow Harmful Gasses To Escape Low Profile Design Minimizes Wind Resistance And Remains Virtually Unnoticed In Your Pond Fish and plant-friendly heater is for use in any size pond Fully Grounded 10 Foot Supply Cord; 200 Watts Measures 2 By 13 By 13 Inches Thermostatically controlled pond de-icer maintains a vent hole in the ice to allow harmful gasses to escape Low profile design minimizes wind resistance and remains virtually unnoticed in your pond Fully grounded 10 foot supply cord; 200 watts Measures 2 by 13 by 13 inches