Helios Fans LEWT‑E+M

The Helios LEWT‑E+M is a robust ground collector pipe designed specifically for ventilation systems requiring underground installation. Made from coextruded PE-HD (polyethylene) with an internally smooth and externally corrugated structure, this pipe ensures low air resistance and high durability. It features an antibacterial, antistatic inner wall, making it hygienic and compliant with DIN 1946 – 6 and VDI 6022 standards. The pipe is 100% odourless and safe, with no emission of harmful substances or vapours. It comes as a bundle with two 25-meter lengths, including a DN 200 wall outlet made of sanded polypropylene, profile seal rings, a connecting sleeve, and seals. When installed according to guidelines, the system meets IP67 protection class, ensuring water and dust resistance. Compared to PVC and PP, the PE-HD material offers significantly improved thermal conductivity.