November 2008 - The Expanded Metals Manufacturers Association, a division of the National Association of Architectural Metal Manufacturers, Glen Ellyn, Ill., issued a statement that expanded metal is used in many ceiling applications. Expanded metal ceiling tiles can be retrofitted into grids used for standard acoustical tiles and in boardrooms or commercial offices. Either 2-ft.-by-2-ft. or 2-ft.-by-4-ft. expanded ceiling panels can be manufactured from a variety of metals and supplied as one-piece tiles ready for installment at any point during construction.