Mitigation Kit - RN3 Fan - Do-It-Yourself - Sub Slab DepressurizationThis kit contains all the difficult to find bits to complete your own Do It Yourself Active Slab Depressurization radon mitigation system and a fairly large fan. These systems have demonstrated up to a 99% reduction in indoor radon levels. Just add pipe, pipe cement and some sweat equity, and you can start breathing safe again. Health Canada strongly recommends hiring a certified C NRPP radon mitigation professional. Professionals can properly