Bosch CFM Reducer Kit - 36" Pull-Out Hoods, 500 Series - 36" HUI CO-HUIRED56UC

When required to meet local code, this CFM reducer kit reduces HUI56551UC's CFM to under 300 to meet make-up air requirements - Reduces CFM to Under 300 CFM - Converts a 6-Inch Round Duct to a 5-Inch Round Duct - Meets Make-Up Air Requirements (Check Your Local Code and Regulations).