Pressure Field Extension Diagnostic Kit, or PFEDK, as the name implies is a tool that can help radon mitigators accurately sizing any sub-slab depressurization application up to 4.4" Static No more guessing or "poking and hoping" that the past experience would work
Due to varying sub slab soil conditions and building size, determining the exact negative pressure required for the job has always been a challenge
Not knowing exact sub slab pressure drop characteristic, radon mitigation becomes art not a science
