The Rn2 is the standard for Radon Mitigation. Ideally tailored performance curve for a vast majority of your mitigations.
UL Listed for outdoor use or in wet locations and in conditioned air streams up to 140 degrees. External wiring box for ease of connection. Waterproof gasket on wiring box. Five-yeah warranty. - See more at: http://www.indoor-air-health-advisor.com/fantech-radon-fans.html#sthash.fVC9WqV5.dpuf