The Necoflex Easi Radon Sump 380mm x 124mm is a simple and effective solution for removing radon gas from building foundations. It is specifically intended for use where post-construction tests indicate high radon levels, allowing the system to be activated with an in-line extractor fan if necessary. Certified by the NSAI, it is designed to maintain a void in the hardcore for future extraction and is built for easy site handling and stacking.