Grease duct is either routed via a fireplace rated shaft enclosure or wrapped by having an permitted hearth insulating blanket that allows for zero clearances, such as that created by 3M. Ensure ducting is the correct sizing - if it is much too tiny, it will limit airflow, and If https://greasetightextractductwor24456.webdesign96.com/37423437/commercial-kitchen-extract-systems-fundamentals-explained