The Helios ELS‑D 200 is a two-step fire shut-off device designed for horizontal installation in ventilation systems. It prevents the upward or downward spread of fire through ventilation ducts in multi-storey buildings. The unit features a compact, space-saving design with an integrated ceiling duct made of galvanized sheet steel for robust performance.
Both ends of the device are fitted with duct connection spigots that comply with DIN 24145/24147 standards, ensuring compatibility with standard duct systems. Two bendable fixing clips are included for secure and straightforward installation. The ELS‑D 200 is certified to fire resistance class K 90 in accordance with DIN 18017 and approved under certificate number Z‑41.3 – 368, offering a dependable fire safety solution for residential and commercial ventilation networks.