The company says its ToughGard™ Rigid Liner Board is a rigid thermal and acoustical board that features its ToughGard airstream surface, designed to provide a long-lasting, efficient duct system. The board is composed of rotary-glass fibers bonded together with a thermosetting resin. The company says the board is used primarily as an acoustical liner in sheet metal ducts, plenums, and equipment housings that supply conditioned air.
— CertainTeed Corp.
Valley Forge, PA