Thunder (TM) CF4 4-Inch Inline Duct Hydroponic Fan Blower with 165 CFM Quiet Operation - 5 Year Manufacturer Warranty Max Wattage: 113w , CFM: 165 , Amps: 0.95 , Voltage: 120v , RPM: 2910 , Hertz: 60hz Quiet Operation - Cyclone fans are designed to operate both quietly and efficiently. Thermal protected AC motor. Durable Design  Cyclone fans are encased in a durable powder coated metal housing. Includes mounting bracket. High Quality Impeller  Equipped with a high quality impeller to ensure both a strong and steady air flow. 5 Year Manufacturer Warranty! (CE Certified and UL Listed)