DescriptionQuietRa® Rotary Duct Liner enhances indoor quality by absorbing noise within sheet metal ducts, and contributes to indoor comfort by lowering heat loss or gain through duct walls.Key Features

• Absorbs fan and air turbulence noise and reduces popping noises within sheet metal ducts.
• Outstanding thermal and acoustical performance.
• Bacterial and fungal growth resistant with an EPA registered biocide that protects the airstream surface from microbial growth