The Unique Double-wall Zero Clearance types employ 3.twenty five” of a unique bigger density ceramic fiber insulation in between the interior liner and outer jacket. These Zero Clearance versions can also be a two-hour fireplace-rated-resistant enclosure/duct assembly. Air recirculation should be regarded for if a commercial kitchen air flow https://commercial-kitchen-extrac23455.thekatyblog.com/35390659/detailed-notes-on-commercial-kitchen-extract-systems