Grease duct is possibly routed through a hearth rated shaft enclosure or wrapped having an accredited hearth insulating blanket that allows for zero clearances, such as that produced by 3M. Hearth-rated (DIS3Z) drastically reducing installation footprint and frees up Place for other use. No want to make an expensive fire-rated https://grease-tight-extract-duct11233.answerblogs.com/37162001/5-easy-facts-about-commercial-kitchen-extract-systems-described