FNN1008: Features: -De-icer plug-Specifically designed for use in Rubbermaid stock tanks-Thermostatically controlled for efficiency-No cord in water, unnoticed by livestock-Suitable for 100, 150, and 300 gallon tanks. Specifications: -1500 W. Assembly Instructions: -Installs in drain plug assembly. Dimensions: -Dimensions: 10.25" H x 5.38" W x 4.75" D. Warranty: -1 year warranty.