Millwork, exclusive of cabinets, namely, door components consisting of stiles, rails, and door cores; nonmetal window frame components consisting of headers and sills; other millwork components consisting of architectural trim parts in the nature of finish trim, stair parts in the nature of nonmetal railings, and architectural moldings; PVC soffit systems including fascia, soffit panels, frieze boards and rafter tails; ceiling trim, ceiling panels, brackets, columns, column bases, pedestals, capitals, astragals, louvers, louver panels, grilles, pergolas, trellises, gable decorations, window surrounds, door surrounds, casings, sills, aprons, and headers, all of the foregoing made in whole or in substantial part of PVC