The Helios IP‑B 125/90 is a 90-degree elbow duct piece featuring a sleeve, made from damp-proof and antistatic expanded polypropylene (EPP). This bend is flame retardant, meeting fire class B2 standards, and is designed to handle air stream temperatures ranging from ‑25°C up to +80°C. It provides a reliable and safe solution for ventilation ductwork requiring sharp directional changes.