Gas venting system made of plastic comprised of rigid plastic exhaust pipes, plastic pipe fittings in the nature of pipe couplings, plastic seals for gas pipe connections, plastic pipe elbows, and plastic t-shaped pipe connectors, plastic perforated rigid soil gas collector pipe and plastic exhaust caps for shielding from rain; perforated rigid soil gas collector pipe and rigid vent pipe, all made of plastic for ventilation applications; pipe termination kit comprised of rigid plastic exhaust...

radon gas equipment and material, namely, radon detectors