A fire extinguisher is usually accompanied by two signs, an ID sign which shows what sort of fires it should be used on, and a location sign. The fire extinguisher location sign is mounted at least 2m above the ground and tells people that a fire extinguisher is located underneath. The sign should be placed so that it is clearly visible for up to 20m. In some situations, you might need one that mounts at right angles to the wall so it can be seen down a corridor. The fire extinguisher ID sign is placed immediately above the extinguisher.