Historical
NFPA 90A-2021
NFPA 90A, Standard for the Installation of Air-Conditioning and Ventilating Systems
NFPA 90A covers construction, installation, operation, and maintenance of air conditioning and ventilating systems, including filters, ducts, and related equipment, to protect life and property from fire, smoke, and gases resulting from fire or conditions having manifestations similar to fire.
Content Provider
National Fire Protection Association [nfpa]