Heba Portable Carbon Dioxide (CO2) Fire Extinguishers are suitable for fire class B & C and ideal for protecting electrical equipment. The extinguisher body is constructed by special forming process that is seamless construction. Each cylinder is then subjected to hydrostatic pressure at 250 bar (369 psi). The is thoroughly shoot blasted to improve paint adhesion. To give a hard wearing corrosion resistance as well as gloss finish each extinguisher is electro-statically painted using polyester resin before being baked in the oven. EN3 approved.