New Dorman HVAC hose.  This is a flexible duct that typically connects the dash blower case to other ducting.  Can be used for desfroster, heater or A/C vents.  2.5" ID x 72" long (when expanded). Nitrile rubber outside with wound wire inside for support.  Can be cut to fit.  Can be clamped or taped to ducting ends. (Clamps not included).  Universal applications.