Equipment
Fire Extinguisher Placement, Mounting Height and Travel Distance
A fire extinguisher that is present, charged, and current can still be a violation. Placement is its own requirement, and it is one of the more common findings in commercial buildings because equipment gets moved, buildings get reconfigured, and nobody rechecks.
The underlying logic is simple: in a real fire you have seconds, not minutes. Everything below follows from that.
Travel distance
Travel distance is how far a person should have to walk to reach an extinguisher — measured along the actual path they would take, not in a straight line through walls and racking.
The maximum tightens as the hazard gets more severe. General Class A coverage allows the longest travel distance. Class B, for flammable liquids, is considerably shorter because those fires develop faster. Class K in commercial kitchens is shorter still.
Mounting height
NFPA 10 sets height limits so units are reachable by most people and are not resting where they will be damaged or knocked over.
- Lighter units (roughly 40 lb and under) mount with the top no more than about five feet above the floor
- Heavier units mount lower, with the top no more than about three and a half feet up
- The bottom of any unit stays several inches clear of the floor
- Units should never simply sit on the floor, even temporarily
Confirm the exact figures for your building with your local authority having jurisdiction, since occupancy and local amendments can affect them.
Visibility and access
An extinguisher has to be findable by somebody who has never looked for it before, under stress, possibly in poor visibility.
- Clearly visible from the normal approach, or signed where it is not
- Nothing stacked, parked, or stored in front of it
- Not tucked behind a door that swings over it
- Not inside a locked room or cabinet the average employee cannot open
- Signage high enough to be seen over racking or shelving
The placement problems we correct most often
- Units removed during a remodel and never remounted
- Seasonal stock stacked in front of a wall unit every fourth quarter
- Travel distance exceeded after racking was added to a warehouse floor
- Kitchen units mounted where you would have to cross the cook line to reach them
- Extinguishers relocated to a back room "so they do not look bad" in a customer area
- Units sitting on the floor after a bracket broke
- No signage in a space where shelving hides the unit from the aisle
Most of these cost nothing to correct. They just need to be noticed by somebody other than the fire marshal.
Common questions
Can we keep an extinguisher in a cabinet?
Yes, cabinets are common and often preferable in public areas or where units would be damaged. The cabinet has to be unlocked or openable without a key, clearly marked, and not blocked.
How many extinguishers do we need?
It depends on floor area, the hazard classification of what you do, and the layout that determines travel distance. Two buildings of identical square footage can need very different counts. A walkthrough answers this properly.
Does the extinguisher have to be near the exit?
Positioning along egress paths is generally good practice, since you want people moving toward the way out rather than away from it. The governing requirement is travel distance from any point in the space.