The minimal duct thickness is described by no matter what code jurisdiction which the undertaking is situated in. Under are two code references related to the essential thickness and material form for grease ducts. Overhang: The extraction Cover must overhang the cooking devices by at the very least 250mm within https://alexisvlzma.vidublog.com/35949232/the-definitive-guide-to-grease-tight-extract-ductwork