BLS 300/150 – Helios Fire damper stone Fire protection ventilation tiles for the supply and extract ventilation of closed rooms and chambers to be protected against the spread of fire and smoke, such as e.g. installation shafts and cable ducts. They allow a constant, static air exchange which prevents heat accumulation in the closed chambers. The tiles can also be used as inflow openings in crucial corridor walls (emergency escape routes), unless the openings are in the lower wall area. Main Features Fire resistance class F 30 to F 120 according to DIN 4102 (see box on right). Maintenance-free and inspection-free, no moving parts. Simple installation. Moisture-resistant, largely resistant to oils, petrol and weak acids. Use in individual cases on the basis of a project-related type approval (vBG) PRODUCT PDF helios catalogue STONE
