The Helios BAK 160 is a reliable fire and smoke damper designed to prevent the spread of fire and smoke in ventilation shafts, walls, or ceilings serving as fire sections with required fire resistance classes K90-4102 and EI 90 – 1366. It is suitable for insertion into spiral ducting or for installation in walls using the mounting sleeve EH. This shutter ensures effective fire protection, complying with stringent fire safety regulations to safeguard buildings and ventilation systems.