Amerex ABC or Multi-Purpose fire extinguishers utilize a specially fluidized and siliconized mono ammonium phosphate dry chemical. It chemically insulates Class A fires by melting at approximately 350°F and coats surface to which it is applied. It smothers and breaks the chain reaction of Class B fires and will not conduct electricity back to the operator. Capacity: 10 pounds Chemical: ABC Dry Chemical Discharge Time: 20 seconds Range: 15-21 ft UL and ULC Rating: 4A:80B:C Height: 20 inches Width: 7.75 inches Depth: 5 inches Shipping Weight: 18 lbs Valve Type: Anodized Aluminum