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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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Service was great. The guys really know what they are doing.




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On time and professional.


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Maintenance




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Quick, friendly and efficient service!




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Mike performed the inspection in good time, with prior understanding of our limitations due to preschool on site.


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Alex R.

Alex R.

Completed annual Fire Extinguisher inspection for 2021

Near Strawberry Ln, Farmington Hills, MI 48334
Robert G.

Robert G.

Near Technology Dr, Shelby Township, MI 48315
Tyler H.

Tyler H.

Jason Called and stated 11-27-2021 they had a toilet over flow and shorted out a smoke detector in the basement and request service if the Covid quarantine Has been lifted Please call before sending someone there 616-824-8234 Tech will need a Pad 100 Smoke

Near Grow Rd, Greenville, MI 48838
Tyler H.

Tyler H.

Jason Called and stated 11-27-2021 they had a toilet over flow and shorted out a smoke detector in the basement and request service if the Covid quarantine Has been lifted Please call before sending someone there 616-824-8234 Tech will need a Pad 100 Smoke

Near Grow Rd, Greenville, MI 48838
Mike R.

Mike R.

Deficiency for SD STORAGE RM BY 128: Smoke detector in storage room by room 125 received water damage from suite above it. The smoke detector had to be removed so the rest of the system would work.Also, same model smoke detector in maintenance room above pool area is starting to corrode at connections and should be replaced. Katie would like a quote please. Fire Lite # SD300

Near US-10, Ludington, MI 49431
Mark S.

Mark S.

Near Plymouth Rd, Detroit, MI 48227
Sean W.

Sean W.

Near Erika Way, South Haven, MI 49090
Gary B.

Gary B.

Annual Fire Extinguisher Inspection (17 FE's) Portable Extinguishers Inspection

Near Marshall Ave SE, Grand Rapids, MI 49508
Brandon  F.

Brandon F.

Completed fire extinguisher inspection

Near Richardson Ave, Lakeview, MI 48850
Robert G.

Robert G.

Near Crocker Blvd, Harrison Township, MI 48045
Tyler H.

Tyler H.

Annual Fire Alarm Inspection (50 devices) (EST Quickstart)

Near E Main St, Lowell, MI 49331
Sean W.

Sean W.

Near Cecilia Dr, South Haven, MI 49090
Alex R.

Alex R.

Corrected Deficiencies from recent inspection

Near Green Rd, Ann Arbor, MI 48105
Robert G.

Robert G.

Near W Hamlin Rd, Rochester Hills, MI 48309
Mark S.

Mark S.

Near Buckingham St, Livonia, MI 48154
John  R.

John R.

Near Cross Oaks Dr, Plainwell, MI 49080
Alex R.

Alex R.

Completed annual Fire Extinguisher inspection for 2021

Near Gratiot Ave, Mount Clemens, MI 48043
John  R.

John R.

Near Cross Oaks Dr, Plainwell, MI 49080
Mark S.

Mark S.

Near Schoenherr Rd, Shelby Township, MI 48315
David H.

David H.

Near Central Park Dr, Meridian charter Township, MI 48864
Sean W.

Sean W.

Near Cross Oaks Dr, Plainwell, MI 49080
George S.

George S.

Near Rochester Rd, Troy, MI 48085
David  C.

David C.

Near 73rd St SW, Byron Center, MI 49315
David H.

David H.

Near Coolidge Rd, East Lansing, MI 48823
Alex R.

Alex R.

Completed Semi-Annual Fire Extinguisher and emergency light inspections for 2021

Near N Telegraph Rd, Dearborn Heights, MI 48127