This product achieves high fire ratings for both A and B class fires, making it highly effective against ordinary wood/ paper fires (A class) and also petrol and volatile liquids (B class). The foam forms a flame smothering seal over the surface of the burning material which prevents reignition. Corrosion resistant finish. Internal polyethylene lining. Includes wall hanging bracket. Squeeze grip operation. Spray nozzle. 35kV dielectric test.