Air Pollution Control Devices 2 : Equipment and devices used for the purpose of cleaning air passing through them or by them in such a manner as to reduce or remove the impurities contained therein
NFPA 96 Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations, 2008 ed. http://www.nfpa.org/codes-and-standards/document-i nformation-pages?mode=code&code=96, (Std: Vent Control and Fr Prac of Comm Cooking Opr - Amer) {240 NFC}