Harmoni™ ceiling tiles are made of illbruck's willtec® foam and are lightweight and mold-resistant. The 2-by-2-ft. tiles come in Vista, with a smooth surface, and Tartan, which features a sculpted pattern. Available in white, black and light gray. (800-225-1920; fax: 612-521-5639; e-mail: sales@illbruck-archprod.com; Internet: www.illbruck-archprod.com)