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Drywall is also commonly known as gypsum board, wallboard, plasterboard (USA,UK, Ireland, Australia, Lebanon), Gibraltar board or gib (New Zealand - GIB being a trademark of Winstone Wallboards), rock lath, Sheetrock (a trademark of United States Gypsum Company),[1] gyproc (Canada, Australia, UK), pladur (Spain - after the Pladur brand), or rigips (Germany and Central Europe - after the Rigips brand), or simply board.