6 aluminum building products; namely, [ aluminum windows, doors, combinations of windows and doors; ] aluminum siding; aluminum and aluminum alloy in sheet or plate form; [ aluminum awnings, canopies, carports, marquis, porticos, sunscreens, and parts thereof, and hardware and accessories therefor sold as a unit; aluminum roof gutters and pipes, door and window frames, building components for field-erected buildings made of aluminum; namely, wall panels, trusses, siding, roofing, windows and doors; ] hot and cold rolled aluminum sheets in cut length and coil form; aluminum ingots, billets and blooms; [ semi aluminum sheets, aluminum slit strips, aluminum floor plates, corrugated aluminum sheets, ] and prepainted aluminum sheets