The Washer,6.5x20x1.6,bla is the lowest priced item on this Frame Fittings(cover) schematic.
This Cover,upp,f.red is the most expensive of the items that make up this Frame Fittings(cover) assembly.
Some items from this specific schematic: Screw,6x18, Cover,front Grill,f.r, Screw,6x14, Damper.