The minimum duct thickness is defined by whatever code jurisdiction the venture is situated in. Below are two code references associated with the required thickness and product type for grease ducts. Overhang: The extraction Cover ought to overhang the cooking devices by a minimum of 250mm for the entrance and https://greasetightextractductwor13344.blogspothub.com/35978594/5-simple-techniques-for-commercial-kitchen-extract-systems