Gently warms and dries the air to prevent formation of mold and mildew in enclosed spaces up to 1000 cubic feet. Provides safe, continuous operation with state-of-the-art safety features. Thermal cut-off switch prevents overheating. Energy-efficient design draws 120 watts. 2-year warranty. Size 13.5?L x 10.5?W x 4?H Treats Up to 1000 cu. ft.