NFPA 10 fire extinguisher requirements state that in commercial buildings need to be placed where they are readily available should a fire occur. NFPA10 outlines several key elements for fire extinguisher selection and installation. The following information was sourced from teh NFPA10 2022 edition 5.4.1 Classifying Occupancy Hazard, 5.5.4 Selection for Specific Hazards, 6.4 Installations for Class C Hazards, 6.5 Installation for Class D Hazards, and Installation for Class K Hazards.