This means that you'll be able to search for NAICS codes directly (if that's your jam). We'll do the math; let's make better data on public procurement together.
This class includes only complete fire control systems. Anything less than a complete system, such as individual end items, assemblies, parts, attachments, or accessories for use in fire control systems are classified in classes other than this class.
Possible NAICS Codes
922160 – Fire Protection
541990 – All Other Professional, Scientific, and Technical Services
561621 – Security Systems Services (except Locksmiths)
334290 – Other Communications Equipment Manufacturing
238210 – Electrical Contractors and Other Wiring Installation Contractors
238220 – Plumbing, Heating, and Air-Conditioning Contractors
561210 – Facilities Support Services
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
334511 – Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing
541330 – Engineering Services