Amerex 20 Pound Carbon Dioxide Fire Extinguisher with wall mount bracket operates effectively at the temperature range of -22 to 120 deg F. Electrically non-conductive fire extinguisher featuring all metal valve construction is effective for class B flammable liquids. Aluminum cylinder fire extinguisher measuring 30" X 13" X 8" is rust free and 30% lighter than steel cylinders. Fire extinguisher with large loop stainless steel pull pin features long lasting high gloss polyester powder paint. It discharges carbon dioxide as a white cloud of snow that eliminates oxygen and puts out a fire. It has a discharge range of 3 - 8' and discharge time of 19 sec. Fire extinguisher can be used on flammable liquids and energized electrical equipment. It is UL listed and FM approved.