Cases made from high quality steel. Resistant to chemicals. Special ventilation valves installed during a fire inside the cabinet supports a lower than the ambient temperature thus protecting the inside of tanks with flammable and explosive liquids. 51mm shelf edges suppresses drains. Cabinets are supplied with 2 keys. FM certified. 10-year warranty. 3 lockable points. Automatic or manual door closure. Automatic door closure at +74 °C ambient temperature - special heat-reactive retainers melts thus indicating increase of ambient temperature.