This Pennsylvania-based company now offers its ToughGard' hvac Duct Liner with Enhanced Surface, a specially designed liner with a coating that repels moisture and provides optimal acoustical performance. Unlike reflective, continuous film coatings, the "breathable" Enhanced Surface coating preserves the sound-dampening performance of the duct liner by allowing sound waves to pass through the open-cell structure into the sound absorbing glass fiber mat.

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