When your home is your castle, it deserves the Royal treatment. Royal Group is a leading North American maker of PVC and vinyl building and home improvement products such as window profiles, fencing and decking; it also produces vinyl siding. Its Royal Mouldings division makes decorative moldings and millwork. Royal Pipe Systems makes plastic pipe and fittings for municipal, plumbing, and electrical construction uses. Other divisions include Royal Window & Door Profiles and Royal Building Products. Royal is a subsidiary of plastics and chemicals maker Axiall Corporation (formerly Georgla Gulf Corporation).