6 (red)- 6 diameter, 3.0lbs weight, +60 sq. Mono ammonium phosphate- non-toxic, eco-friendly dry chemical. How does it work. The elide fire ball only activates when it comes in contact with a flame. It does not activate on elevated levels of heat. When flame comes in contact with efb it will activate within 3-5 seconds. Passive- efb is mounted in areas of concern where a possible fire can occur. Examples: switchboard and circuit control system, electric appliance areas, deteriorated or damaged electrical wire areas, battery power bank. Active- efb is thrown, flown, or launched into a fire (professional use). What type of fires can the efb extinguish. Type a- fires involving solid materials such as wood, paper or textiles. Type b- fires involving flammable liquids such as petrol, diesel or oils and gases. Type c- fires involving live electrical apparatus.