Overhang: The extraction Cover really should overhang the cooking devices by no less than 250mm in the front and sides. For combi-steamers or baking ovens, this will increase to 600mm. In all scenarios the joints and seams might be welded, the sole exception are Individuals factory made duct systems as https://remingtonofvjx.livebloggs.com/43352415/commercial-kitchen-extract-systems-options