Basic Use: ToughGard™ Rigid Liner Board with Enhanced Surface is a high-quality acoustical and thermal board type insulation used primarily for lining the interior of HVAC sheet metal ducts and plenums to absorb unwanted crosstalk, equipment and air rush noise. This product performs in most types of heating and cooling systems operating at velocities up to 6,000 fpm (30.5 m/s) and temperatures to
250­F (121­C).

Benefits: ToughGard™ Rigid Liner Board with Enhanced Surface improves energy efficiency by reducing heat gain or loss. The product can be precision cut using both manual and automatic cutting equipment, and is durable and easy to clean.