The special Double-wall Zero Clearance products make use of three.twenty five” of a unique bigger density ceramic fiber insulation involving the internal liner and outer jacket. These Zero Clearance designs will also be a two-hour fireplace-rated-resistant enclosure/duct assembly.   Schedule cleaning and easy accessibility for grease filters are emphasized in https://commercialkitchenextracts35567.eedblog.com/37141125/how-commercial-kitchen-extract-systems-can-save-you-time-stress-and-money