This 10kg powder automatic fire extinguisher is designed for enclosed areas such as engine/plant rooms etc. It contains dry powder extinguishant which covers most fires involving wood/paper, flammable liquids and electrical fires. The heat-sensitive glass bulb bursts when the temperature rises to 68C. Height (mm) 312 Diameter (mm) 270 Discharge time (secs) 20 Capacity 10kg Filled weight (kg) 13.34 Bulb release temperature (C) 68 Coverage (sq m) 15.