2Kg. PowerX fire extinguishers from Thomas Glover come with a 5 year warranty as standard, as well as being fully refillable and supplied complete with a hanging bracket and coated steel handles. For added peace of mind, they are CE approved with a BSI Kitemark. Suitable for Class B fire risks (flammable liquids) and Electrical, with a 34B fire rating, this extinguisher is suitable for use in most buildings, such as hotels, shops, restaurants, industrial units, supermarkets and more.. Suitable for Class B fire risks and Electrical. 34B fire rating. Suitable for most buildings, such as hotels, shops, restaurants, industrial units, supermarkets and much more. Controlled discharge