Ideal for elevator shafts and area separation walls in multifamily projects and townhomes, GreenGlass liner panel protects against mold, moisture, fire, and unwanted noise. It features a mold-protected gypsum core and a mold- and moisture-resistant fiberglass mat. Cost: 10 percent more than standard liner panels. Temple-Inland. 800-231-6060. www.templeinland.com.