FlameChek is the brand name for this company's line of duct insulation designed for high temperatures. An insulation blanket designed for use in commercial and industrial passive fire protection equipment, FlameChek was made to provide one- and two-hour fire protection around ducts in and easy to install format. It consists of a glass fiber blanket encapsulated in fiberglass reinforced foil facing. UL-listed and approved by the National Fire Protection Association (NFPA) for fire-rated grease ducts, FlameChek is available in 25 ft. rolls and two- or four-foot lengths.

CertainTeed Corp., Insulation Group, P.O. Box 860, Valley Forge, PA 19482, 800/233-8990.