Peace of Mind: Radon is an adverse gas that comes up from the ground, which can accumulate in the home, especially in the basement, garage and cellar. This fan can work without interval, continuously exhausting radon gas out of your home. Weather Resistance--Made with Sturdy Glass Reinforced Plastic, this radon fan is especially designed to run 24/7 365 in all weather conditions. IP68 waterproof for both outdoor and indoor use. Ideal Replacement--150CFM powerful airflow with a decibel range of 40-50db, our Radon Mitigation Fan is an ideal replacement for your old one. It is far more economical. Owning our radon fan is a long-term investment in you and your family's health. Upgraded Wiring--Easy Installation in 2 ways: you can plug in the outlet directly for indoor installation or use the terminal block to wire for outdoor installation, without help from a specialist. 2 Year Warranty--Feel free to contact us if you find any issues with your purchase. We will reply within 12hrs. Things Included--Radon Mitigation Fan*1, Rubber Couplings*2. Radon Fan 150CFM Radon Mitigation System 4" Electric Inline Duct Fan Waterproof Radon Mitigation Fan for Outdoor Use Weather Resistance