<![CDATA[EC21 Product Catalogs - hvac duct]]> <![CDATA[4 Inch Semi-Rigid Aluminum Ducting Hose HVAC 6 Inch Smoke Corrugated Aluminum Pipe Tube]]> <![CDATA[Nanosox Fabric HVAC Duct Flexible Air Duct]]> <![CDATA[Duct Air Conditioner]]> <![CDATA[D-500G, Flexible Duct Hose (Al Foil 2p, Glass Wool Insulated)]]> <![CDATA[Foil Scrim Kaft (FSK) Aluminum Foil Tape]]>