KITCHEN VENTILATION SYSTEM CALCULATION 

Types of Hood

There are many types, categories and styles of hoods available, and Selection depends on many factors. Hoods are classified on the basis of whether They are designed to handle oil; Type I hoods are designed grease and smoke removal, and are not Type II. Model codes differentiate between grease-handling and non-grease-handling hoods, But not all model codes use the Type I/Type II terminology. A Type I hood can be used where a Type II hood is required, but vice versa Not allowed. However, the characteristics of the equipment and processes under the hood, and not necessarily the type of hood, determine Requirements for the entire exhaust system including the hood.