The Exclusive Double-wall Zero Clearance types make use of three.25” of a unique better density ceramic fiber insulation amongst the inner liner and outer jacket. These Zero Clearance products will also be a two-hour fire-rated-resistant enclosure/duct assembly. The Create up of grease in kitchen extraction and air flow systems https://andretjxmz.mybuzzblog.com/16767232/how-commercial-kitchen-extract-systems-can-save-you-time-stress-and-money