The Helios BTV 160 shutter is engineered to prevent the spread of fire and smoke within ventilation systems. It is suitable for installation in ventilation shafts or ducting acting as fire compartments, meeting the K90-4102 fire resistance standard. The shutter is designed for insertion into spiral ducting or wall installation using the EH mounting sleeve. With maintenance-free operation and certified approval No. Z‑41.3 – 694, the BTV 160 ensures reliable fire protection in critical ventilation applications.