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A radon fan is the most critical component in a radon mitigation system. Grainger carries radon fans for side wall and roof ventilation of radon gas from homes and office buildings. Choose from a side wall fan that fits a 3” dia. duct and UV resistant thermoplastic and polycarbonate inline radon fans that fit ducts 4-1/2” dia. Shop by type, size, static pressure and voltage when you come to Grainger for radon mitigation supplies, including a high-quality radon fan.Close