The component with the lowest price in the AIR DUCT schematic is the Screw,tapping,4x1.
This Duct R,air *nh1* is the most expensive of the items that make up this Air Duct assembly.
Some items from this specific schematic: Collar,6x4, Screw,tapping,4x1, Set Illus*nh146m*, Set Illus*nh146m*.