AFFF (Aqueous Film Forming Foam) Fire extinguishers offer some additional benefits over water units. Not only do they typically have higher fire ratings, but they are also suitable for Class B fires involving flammable liquids, as well as Class A fires, those involving combustible materials. They are highly effective fire extinguishers with a rapid flame knockdown, and do not compromise visibility for safe building evacuation. This Commander 6ltr AFFF Foam Fire Extinguisher features a 21A 144B fire rating, and is 35kVa dielectrically tested and safe for inadvertent use on fires involving live electrical equipment. The unit is also Kitemarked and comes with our full 5-year warranty. New customer? Register your details and we’ll begin the approval process for your customer account. Once approved, you’ll gain access to the CheckFire store and all the latest news and product offers.