Where refuse, paper & wood combustion is the most likely fire hazard, Class A water-based fire suppression may be your best choice. Illustrated step-by-step instruction label brings inexperienced users up to speed in seconds. Read-at-a-glance pressure gauge simplifies status checks. Impact- & corrosion-resistant valve & trigger mechanism ensure trouble-free operation. Easy-pull safety pin prevents accidental discharges without slowing you down in an emergency. Rechargeable. Material(s): Stainless Steel Cylinder; Water; Fire Class: A; UL Rating: 2-A; Charge Weight: 20.86 lbs.