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What do the letters and numbers by the fire extinguisher classification mean?

Every fire extinguisher has an alphanumeric rating that tells you what types of fires it can extinguish as well as the size of fire it can put out.

The letters stand for the class of fire the extinguisher can be used against:

A – ordinary combustibles (wood, paper, plastic, etc.)
B – flammable liquids (oil, gas, petroleum, etc.)
C – electrical equipment
D – metals
K – cooking oils and fats

The numbers indicate how much of the fire can be put out by the fire extinguisher. Every number before the A means it is as effective as 1 ¼ gallons of water. For example, 2A means the fire extinguisher is as effective as 2 ½ gallons of water, and so on. The numbers before B and C are a measure of the amount of square feet the fire extinguisher can put out. For example, a 10:BC fire extinguisher can extinguish a fire over 10 sq ft.

If your business in DC, Maryland, or Virginia requires fire extinguisher services, contact Fire Pros online today to schedule service!

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Local Reviews

Fire Pros, LLC Rated 4.9 out of 5 stars based on 3039 customer reviews

Map of Grand Haven, MI

Board Member handling sprinklers and buildings in complex




Review of Fire Pros, LLC


Map of Wyoming, MI

Professional service




Review of Fire Pros, LLC

Great customer service & Techs are awesome & professional! Thank you for your service


Map of East Lansing, MI

great service, very polite and very thorough




Review of Fire Pros, LLC


Map of Wixom, MI

Excellent Service




Review of Fire Pros, LLC

Been doing business with Fire Systems of Michigan for several years and they have always provided outstanding service along with always working with us on coordinated times to complete each service. Each of the individuals who come in are very personable, conduct themselves in a professional manner and always willing to work with you.


Map of Comstock Park, MI

Great service




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Map of Kalamazoo, MI

Inspection Of Building 10




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Map of East Lansing, MI

Reliable service




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Map of Wyandotte, MI

Great service




Review of Fire Pros, LLC

that was good service


Map of Detroit, MI

Amazing, and very knowledgeable and efficient guy




Review of Fire Pros, LLC

I’ve had the pleasure to walk with Bob Greenwood, and I must say he was very efficient but beyond that he has an amazing approach and know how to treat a client. We would be more than happy to have him work at our jobsite any day!


Map of Detroit, MI

Service was professsionally performed




Review of Fire Pros, LLC

My opinion of your company and the reps who make visits to our building is to be commended for time and talent. Thank you


Thanks




Review of Fire Pros, LLC


On time and great job!




Review of Fire Pros, LLC

Good job had everything he needed on the truck.


Manager




Review of Fire Pros, LLC


Professional, friendly, quality service




Review of Fire Pros, LLC


Great Service




Review of Fire Pros, LLC

Jason was very nice and professional.


Great Service




Review of Fire Pros, LLC


Terrance changing out a sprinkler head




Review of Fire Pros, LLC

Always efficient, polite, professional


Very professional and really nice guys!




Review of Fire Pros, LLC


always profesional and courteous,on time and clean up after themselves




Review of Fire Pros, LLC


George was very polite and pleasant explaining every step and was quick at getting a quote for us.




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Mark S.

Mark S.

Near Grand River Ave, Redford Charter Township, MI 48240
Ron R.

Ron R.

Near Newstead Ave SW, Wyoming, MI 49509
Robert W.

Robert W.

Near W 8 Mile Rd, Detroit, MI 48219
Alex R.

Alex R.

Dropped off loaners

Near E 10 Mile Rd, Hazel Park, MI 48030
Alex R.

Alex R.

Near E 10 Mile Rd, Hazel Park, MI 48030
John R.

John R.

Near University Park Dr, Mount Pleasant, MI 48858
Austin C.

Austin C.

Near Burlingame Ave SW, Wyoming, MI 49509
Tyler H.

Tyler H.

check system after multiple troubles tripped. Tyler spoke to Victoria to silence it- she is still on site- call Tyler H with any questions. advise the office if we need to go back out.

Near Bailey St, East Lansing, MI 48823
John H.

John H.

Alarm Systems Inspection

Near N Nicolet St, Mackinaw City, MI 49701
Jared J.

Jared J.

Near Gratiot Ave, Roseville, MI 48066
Mark S.

Mark S.

Near W Nine Mile Rd, Southfield, MI 48033
Mike R.

Mike R.

Suggested for DMP XR500 Cash Office: Div 3: Trouble of DMP XR500 FIRE/BURG PANEL: WIRELESS TROUBLE. This is likely due to low batteries in the wireless Panic/holdup transmitters. Recommend replacing batteries in the transmitters to clear trouble from panel. 3 volt CR2 Lithium battery, one per transmitter, 4 transmitters total. Suggested: Wireless receiver in cash office above burglary panel is being held on my tape. Customer may want to replace DMP XM 1100 Wireless receiver.

Near Cherry Valley Ave SE, Caledonia, MI 49316
David H.

David H.

Near Fairlanes Ave SW, Grandville, MI 49418
John R.

John R.

Near N Mission St, Mount Pleasant, MI 48858
Robert W.

Robert W.

Near W Eleven Mile Rd, Berkley, MI 48072
Mark S.

Mark S.

Near S Rochester Rd, Rochester Hills, MI 48307
David H.

David H.

Near Dairy Ln, Grand Haven, MI 49417
Austin C.

Austin C.

Near Ridge Rd, Stevensville, MI 49127
John H.

John H.

Portable Extinguishers Inspection

Near Oden Rd, Alanson, MI 49706
David H.

David H.

Near S Beechtree St, Grand Haven, MI 49417
John R.

John R.

Near W Superior St, Alma, MI 48801
Alex R.

Alex R.

Corrected Deficiency from sprinkler Inspection FACP Showing All systems normal and reset

Near Gratiot Rd, Saginaw, MI 48609
Alex R.

Alex R.

Corrected Deficiency from sprinkler Inspection FACP Showing All systems normal and reset

Near Gratiot Rd, Saginaw, MI 48609
Alex R.

Alex R.

Corrected Deficiency from sprinkler Inspection FACP Showing All systems normal and reset

Near Gratiot Rd, Saginaw, MI 48609
David H.

David H.

Near E 32nd St, Holland, MI 49423