The XG line of fiberglass products includes the Microlite XG formaldehyde-free duct wrap insulation, Linacoustic XG formaldehyde-free fiberglass duct liner and EnviroAire XG fiberglass duct board. The products are manufactured with a nontoxic acrylic resin to bind the fiberglass wool. Microban anti-microbial agents are included in the airstream surface coating to protect the surface against the potential growth of fungus and bacteria.

Johns Manville Corp., 717 17th Street, Denver, CO 80202; (800) 654-3103.