Overhang: The extraction Cover need to overhang the cooking gear by no less than 250mm with the front and sides. For combi-steamers or baking ovens, this raises to 600mm. A number of forms of commercial kitchen air flow  and extraction systems cater to different kitchen requirements: Lesser units are ideal https://grease-tight-extract-duct68990.howeweb.com/37703813/about-commercial-kitchen-extract-systems