A passive fire defense Resolution for air distribution techniques, smoke Management and kitchen grease ducts The basement extract ductwork technique (demonstrated in brown) need to be suited to clearing fumes and smoke within the basement stage. The process really should Commonly be rated for no less than just one hour https://grease-tight-extract-duct90122.thezenweb.com/the-single-best-strategy-to-use-for-grease-tight-extract-ductwork-75220281