kitchen exhaust standards 3

https://mega-wiki.win/index.php/Why_UL_300_Compliance_Is_Key_to_Kitchen_Fire_Safety_and_NFPA_96_Standards

Kitchen exhaust standards can be surprisingly strict, and for good reason. In most commercial spaces, the hood has to move a certain volume of air per square foot of cooktop, depending on whether you’re frying, grilling, or just simmering. I’ve seen older restaurants lose their permits because their system failed to hit the minimum airflow—grease buildup and fire risk skyrocket when the exhaust isn’t sized properly. Even at home, if your ductwork is too narrow or you have too many bends, the fa…