HP 190 HP Series Fans are Specially Designed with Higher Pressure Capabilities for Radon Mitigation Applications Fantech has Developed the HP Series Fans Specifically to Suit the Higher Pressure Capability Requirements Needed in Radon Mitigation Applications. Most Radon Mitigators Who Previously used the Fantech FR Series Fans Have Switched to the New HP Series Feature and Specification Improved UV Resistant Housings Approved for Commercial Applications UL Approved for Wet Locations (Outdoors) Sealed Housings and Wiring Boxes to Prevent Radon Leakage or Water Penetration Energy Efficient Permanent Split Capacitor Motors External Wiring Box Full Five Year Factory Warranty Electrical Specifications: Volt: 115 Wattage Range: 60 - 85 Max. Amps: 0.78 CFM: 157 Max. Ps: 2.01