2 Speed Radon Fan, 4 inch Radon Mitigation System Fan 280CFM|188CFM Selectable Quiet and Energy Efficient IP67 Waterproof Indoor Outdoor Installation

Rysmirs 4 Inch IP67 Waterproof Radon Mitigation Fan Series for Indoor Outdoor Installation -2 speed option, 280CFM at 45dB and 188CFM at 32dB, which could balance the noise level with the air volume, increase the comfort - Inside centrifugal impeller, radon fan use German-made motors, the speed reaches to 2600RPM, Easily and quickly improve the air circulation to keep fresh air in your area. -Noiseless duct fan system: The radon mitigation fan use unique design of the shell and the backward centrifugal impeller motor, with inside silencer cotton to reduce the noise produced. -Durable and strong plastic housing (ABS+PC) with UV protection, extend the product service life up to 10 years. -Proprietary deigned backward inclined centrifugal impeller build high volume suction and strong air exhaustion, widely used for household, industrial, building use. -You can immediately feel how efficiently it moves air through the system. It creates a strong, steady vacuum without needing to run at maximum speed all the time. The static pressure performance listed on the product page (350/280 Pa) matches well with what you can feel in real use. The overall functionality is reliable and consistent. -The Radon Mitigation System is a quality, quiet, and reliable solution for homeowners looking to reduce radon exposure. Its adjustable airflow, durable construction, and indoor/outdoor flexibility make it an excellent choice for both replacement and new installations.

• 2-Speed Radon Fan - This upgrade radon mitigation fan offers two speed settings (280CFM and 188CFM). You can started with the default high speed for initial radon reduction, then switched to low for daily use to save energy. It runs very smoothly—no vibration, and the noise is minimal.
• Strong Performance, Quickly Mitigate Radon - The fan creates a strong and steady vacuum through the system, moving air efficiently without struggling. This makes a noticeable difference in stabilizing radon levels, especially in homes where airflow requirements are higher. Most homes experience restored healthy air quality within 48 hours of installation
• Quiet Operation – This fan has a soft, steady hum that disappears in the background instead of the harsh whirring sound that other fans create. Which is important for indoor setups or homes where the system is close to living areas. Even at full speed, the fan runs around 45 dB, roughly the noise level of a library whisper
• Robust & Durable – Excellent quality with solid and well-built housing, everything fits together tightly, and the wiring connection is secure and well-protected, sturdy construction with overbuilt design last up to 10 years. IP67 waterproof rating allows indoor or outdoor installation, vertically or horizontally
• Straightforward Installation - The mounting brackets are simple to line up, and the design leaves plenty of space for connecting pipes and sealing joints. It also fits well with standard 4-inch PVC
• Easy to Switch the Speeds - It‘s very easy to switch the high or low speed of the fan because it uses a lever type connector for the wires that need to be switched and it will take maybe 5 minutes to finish