Grease duct is both routed via a fire rated shaft enclosure or wrapped having an approved fireplace insulating blanket which allows for zero clearances, for instance that manufactured by 3M. Duct installation demands a obvious distance from combustible elements. NFPA 96 mandates that duct access doorways be put in at https://daltonxncre.blogspothub.com/35946193/commercial-kitchen-extract-systems-fundamentals-explained