Helios Fans ELS‑D 100 Note: FREE Click & Collect
The Helios ELS‑D 100 is a two-step fire protection shut-off device designed for horizontal installation in ventilation systems. It serves to prevent the spread of fire through ductwork between building floors. The unit features a compact housing that includes an integrated ceiling duct made of galvanized sheet steel. Both ends of the device are equ ...