ABC Extinguisher Calculator
Area to be protected (square footage)
Hazard Class
Extinguisher Rating
Additional extinguishers to meet special requirements
Suggested minimum number of portable fire extinguishers
Each extinguisher protects (square feet)
Customer's extinguisher cost (each)
Customer's annual external maintenance cost
Customer's six-year maintenance or recharge cost
Customer's hydrotest cost (includes six-year maintenance)
Average annual cost per square foot
(to purchase and maintain portable extinguishers)