Halon Systems, NFPA 12A; these systems were being banned from the Montreal Protocol while in the late eighties—any system is a legacy system mounted just before this ban Condensed Aerosol Fire-Extinguishing Systems, https://patch.com/north-carolina/raleigh/classifieds/gigs-services/467764/safeguarding-lives-and-property-all-american-fire-protections-quarter-century-of-excellence