Be certain ducting is the right sizing - if it is much too small, it'll limit airflow, and Should the ducting is just too significant, it'll trigger excessive sounds. Air recirculation should be deemed for if a commercial kitchen air flow technique is to operate properly. By way of example, https://grease-tight-extract-duct11223.blogthisbiz.com/44134719/considerations-to-know-about-grease-tight-extract-ductwork