Dranjer: F-N2

The Dranjer: F-N2 or “F-series” is a small drain with a weighted-brass, ring valve. The "F" series can be used in homes where sub-slab suction has been included as a radon mitigation technique, for air conditioner condensation, as an air-to-air heat exchanger, for energy-efficient gas furnaces with no nearby trapped drain, for new homes in the construction phase, and as a drain for condensation residue wherever there is a concern about gas or odors.